diff --git a/tests/net/6lo/prj.conf b/tests/net/6lo/prj.conf
index 87cdfc6a093..ed070a9ce85 100644
--- a/tests/net/6lo/prj.conf
+++ b/tests/net/6lo/prj.conf
@@ -1,6 +1,7 @@
 CONFIG_NETWORKING=y
 CONFIG_NET_TEST=y
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 CONFIG_NET_IPV6=y
 CONFIG_NET_IPV6_ND=n
 CONFIG_NET_IPV6_DAD=n
diff --git a/tests/net/6lo/src/main.c b/tests/net/6lo/src/main.c
index b26a4d715ab..0cc196cec7f 100644
--- a/tests/net/6lo/src/main.c
+++ b/tests/net/6lo/src/main.c
@@ -460,7 +460,8 @@ static struct net_pkt *create_pkt(struct net_6lo_data *data)
 	uint16_t len;
 	int remaining;
 
-	pkt = net_pkt_alloc_on_iface(net_if_get_default(), K_FOREVER);
+	pkt = net_pkt_alloc_on_iface(
+		net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY)), K_FOREVER);
 	if (!pkt) {
 		return NULL;
 	}
@@ -1153,8 +1154,10 @@ void test_loop(void)
 	}
 
 #if defined(CONFIG_NET_6LO_CONTEXT)
-	net_6lo_set_context(net_if_get_default(), &ctx1);
-	net_6lo_set_context(net_if_get_default(), &ctx2);
+	net_6lo_set_context(net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY)),
+			    &ctx1);
+	net_6lo_set_context(net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY)),
+			    &ctx2);
 #endif
 
 	for (count = 0; count < ARRAY_SIZE(tests); count++) {
diff --git a/tests/net/context/prj.conf b/tests/net/context/prj.conf
index 2b759c7e008..0b8954cda5d 100644
--- a/tests/net/context/prj.conf
+++ b/tests/net/context/prj.conf
@@ -8,6 +8,7 @@ CONFIG_NET_MAX_CONTEXTS=10
 CONFIG_NET_CONTEXT_CHECK=y
 CONFIG_NET_CONTEXT_SYNC_RECV=y
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 CONFIG_NET_LOG=y
 CONFIG_ENTROPY_GENERATOR=y
 CONFIG_TEST_RANDOM_GENERATOR=y
diff --git a/tests/net/context/src/main.c b/tests/net/context/src/main.c
index 879d559a1c7..1b45adfb508 100644
--- a/tests/net/context/src/main.c
+++ b/tests/net/context/src/main.c
@@ -978,8 +978,9 @@ static void test_init(void)
 {
 	struct net_if_addr *ifaddr;
 	struct net_if_mcast_addr *maddr;
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface;
 
+	iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
 	zassert_not_null(iface, "Interface is NULL");
 
 	ifaddr = net_if_ipv6_addr_add(iface, &in6addr_my,
diff --git a/tests/net/dhcpv4/src/main.c b/tests/net/dhcpv4/src/main.c
index bfdbf162511..d9b1088b2fd 100644
--- a/tests/net/dhcpv4/src/main.c
+++ b/tests/net/dhcpv4/src/main.c
@@ -431,7 +431,7 @@ void test_dhcp(void)
 
 	net_mgmt_add_event_callback(&dhcp_cb);
 
-	iface = net_if_get_default();
+	iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
 	if (!iface) {
 		zassert_true(false, "Interface not available");
 	}
diff --git a/tests/net/ethernet_mgmt/src/main.c b/tests/net/ethernet_mgmt/src/main.c
index 0082a950f73..e730fa5727a 100644
--- a/tests/net/ethernet_mgmt/src/main.c
+++ b/tests/net/ethernet_mgmt/src/main.c
@@ -4,8 +4,10 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+#define NET_LOG_LEVEL CONFIG_NET_L2_ETHERNET_LOG_LEVEL
+
 #include <logging/log.h>
-LOG_MODULE_REGISTER(net_test, CONFIG_NET_L2_ETHERNET_LOG_LEVEL);
+LOG_MODULE_REGISTER(net_test, NET_LOG_LEVEL);
 
 #include <zephyr.h>
 
@@ -15,6 +17,14 @@ LOG_MODULE_REGISTER(net_test, CONFIG_NET_L2_ETHERNET_LOG_LEVEL);
 
 #include <ztest.h>
 
+#if NET_LOG_LEVEL >= LOG_LEVEL_DBG
+#define DBG(fmt, ...) printk(fmt, ##__VA_ARGS__)
+#else
+#define DBG(fmt, ...)
+#endif
+
+static struct net_if *default_iface;
+
 static const uint8_t mac_addr_init[6] = { 0x01, 0x02, 0x03,
 				       0x04,  0x05,  0x06 };
 
@@ -305,9 +315,49 @@ ETH_NET_DEVICE_INIT(eth_fake, "eth_fake", eth_fake_init, NULL,
 		    &eth_fake_data, NULL, CONFIG_ETH_INIT_PRIORITY,
 		    &eth_fake_api_funcs, NET_ETH_MTU);
 
+#if NET_LOG_LEVEL >= LOG_LEVEL_DBG
+static const char *iface2str(struct net_if *iface)
+{
+#ifdef CONFIG_NET_L2_ETHERNET
+	if (net_if_l2(iface) == &NET_L2_GET_NAME(ETHERNET)) {
+		return "Ethernet";
+	}
+#endif
+
+#ifdef CONFIG_NET_L2_DUMMY
+	if (net_if_l2(iface) == &NET_L2_GET_NAME(DUMMY)) {
+		return "Dummy";
+	}
+#endif
+
+	return "<unknown type>";
+}
+#endif
+
+static void iface_cb(struct net_if *iface, void *user_data)
+{
+	struct net_if **my_iface = user_data;
+
+	DBG("Interface %p (%s) [%d]\n", iface, iface2str(iface),
+	    net_if_get_by_iface(iface));
+
+	if (net_if_l2(iface) == &NET_L2_GET_NAME(ETHERNET)) {
+		if (PART_OF_ARRAY(NET_IF_GET_NAME(eth_fake, 0), iface)) {
+			*my_iface = iface;
+		}
+	}
+}
+
+static void test_setup(void)
+{
+	net_if_foreach(iface_cb, &default_iface);
+
+	zassert_not_null(default_iface, "Cannot find test interface");
+}
+
 static void test_change_mac_when_up(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	struct ethernet_req_params params;
 	int ret;
 
@@ -322,7 +372,7 @@ static void test_change_mac_when_up(void)
 
 static void test_change_mac_when_down(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	struct ethernet_req_params params;
 	int ret;
 
@@ -345,7 +395,7 @@ static void test_change_mac_when_down(void)
 
 static void test_change_auto_neg(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	struct ethernet_req_params params;
 	int ret;
 
@@ -359,7 +409,7 @@ static void test_change_auto_neg(void)
 
 static void test_change_to_same_auto_neg(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	struct ethernet_req_params params;
 	int ret;
 
@@ -374,7 +424,7 @@ static void test_change_to_same_auto_neg(void)
 
 static void test_change_link(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	struct ethernet_req_params params = { 0 };
 	int ret;
 
@@ -388,7 +438,7 @@ static void test_change_link(void)
 
 static void test_change_same_link(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	struct ethernet_req_params params = { 0 };
 	int ret;
 
@@ -402,7 +452,7 @@ static void test_change_same_link(void)
 
 static void test_change_unsupported_link(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	struct ethernet_req_params params = { 0 };
 	int ret;
 
@@ -416,7 +466,7 @@ static void test_change_unsupported_link(void)
 
 static void test_change_duplex(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	struct ethernet_req_params params;
 	int ret;
 
@@ -430,7 +480,7 @@ static void test_change_duplex(void)
 
 static void test_change_same_duplex(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	struct ethernet_req_params params;
 	int ret;
 
@@ -444,7 +494,7 @@ static void test_change_same_duplex(void)
 
 static void test_change_qav_params(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	const struct device *dev = net_if_get_device(iface);
 	struct eth_fake_context *ctx = dev->data;
 	struct ethernet_req_params params;
@@ -620,7 +670,7 @@ static void test_change_qav_params(void)
 
 static void test_change_promisc_mode(bool mode)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	struct ethernet_req_params params;
 	int ret;
 
@@ -644,7 +694,7 @@ static void test_change_promisc_mode_off(void)
 
 static void test_change_to_same_promisc_mode(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 	struct ethernet_req_params params;
 	int ret;
 
@@ -660,6 +710,7 @@ static void test_change_to_same_promisc_mode(void)
 void test_main(void)
 {
 	ztest_test_suite(ethernet_mgmt_test,
+			 ztest_unit_test(test_setup),
 			 ztest_unit_test(test_change_mac_when_up),
 			 ztest_unit_test(test_change_mac_when_down),
 			 ztest_unit_test(test_change_auto_neg),
diff --git a/tests/net/icmpv4/src/main.c b/tests/net/icmpv4/src/main.c
index d12a7b7d8c3..2488f87519b 100644
--- a/tests/net/icmpv4/src/main.c
+++ b/tests/net/icmpv4/src/main.c
@@ -418,7 +418,7 @@ static void test_icmpv4(void)
 {
 	struct net_if_addr *ifaddr;
 
-	iface = net_if_get_default();
+	iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
 	if (!iface) {
 		zassert_true(false, "Interface not available");
 	}
diff --git a/tests/net/icmpv6/prj.conf b/tests/net/icmpv6/prj.conf
index 7f9c3c99de5..1748d1b8f1b 100644
--- a/tests/net/icmpv6/prj.conf
+++ b/tests/net/icmpv6/prj.conf
@@ -13,3 +13,4 @@ CONFIG_ENTROPY_GENERATOR=y
 CONFIG_TEST_RANDOM_GENERATOR=y
 CONFIG_ZTEST=y
 CONFIG_MAIN_STACK_SIZE=1280
+CONFIG_NET_L2_ETHERNET=n
diff --git a/tests/net/ieee802154/fragment/prj.conf b/tests/net/ieee802154/fragment/prj.conf
index c2d7cfaa455..7f2727a8588 100644
--- a/tests/net/ieee802154/fragment/prj.conf
+++ b/tests/net/ieee802154/fragment/prj.conf
@@ -2,6 +2,7 @@ CONFIG_ZTEST=y
 CONFIG_NETWORKING=y
 CONFIG_NET_TEST=y
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 CONFIG_NET_IPV6=y
 CONFIG_NET_IPV6_ND=n
 CONFIG_NET_IPV6_DAD=n
diff --git a/tests/net/ieee802154/fragment/src/main.c b/tests/net/ieee802154/fragment/src/main.c
index 7056203f4a2..ce4e1846db0 100644
--- a/tests/net/ieee802154/fragment/src/main.c
+++ b/tests/net/ieee802154/fragment/src/main.c
@@ -237,7 +237,8 @@ static struct net_pkt *create_pkt(struct net_fragment_data *data)
 	uint16_t len;
 	int remaining;
 
-	pkt = net_pkt_alloc_on_iface(net_if_get_default(), K_FOREVER);
+	pkt = net_pkt_alloc_on_iface(
+		net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY)), K_FOREVER);
 	if (!pkt) {
 		return NULL;
 	}
@@ -294,7 +295,8 @@ static struct net_pkt *create_pkt(struct net_fragment_data *data)
 	net_pkt_lladdr_dst(pkt)->type = NET_LINK_IEEE802154;
 
 	memcpy(net_pkt_lladdr_src(pkt),
-	       net_if_get_link_addr(net_if_get_default()),
+	       net_if_get_link_addr(
+		       net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY))),
 	       sizeof(struct net_linkaddr));
 
 	return pkt;
diff --git a/tests/net/ip-addr/prj.conf b/tests/net/ip-addr/prj.conf
index 648b6ef4cc4..3f718037e91 100644
--- a/tests/net/ip-addr/prj.conf
+++ b/tests/net/ip-addr/prj.conf
@@ -17,4 +17,5 @@ CONFIG_NET_IF_UNICAST_IPV6_ADDR_COUNT=3
 CONFIG_NET_IF_UNICAST_IPV4_ADDR_COUNT=2
 CONFIG_NET_IF_MCAST_IPV4_ADDR_COUNT=3
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 CONFIG_ZTEST=y
diff --git a/tests/net/ip-addr/src/main.c b/tests/net/ip-addr/src/main.c
index ac4225ee3d3..c01c6922d96 100644
--- a/tests/net/ip-addr/src/main.c
+++ b/tests/net/ip-addr/src/main.c
@@ -34,6 +34,8 @@ LOG_MODULE_REGISTER(net_test, CONFIG_NET_IPV6_LOG_LEVEL);
 #define DBG(fmt, ...)
 #endif
 
+static struct net_if *default_iface;
+
 #define TEST_BYTE_1(value, expected)				 \
 	do {							 \
 		char out[3];					 \
@@ -234,7 +236,7 @@ static void test_ipv6_addresses(void)
 	zassert_true(net_ipv6_is_addr_mcast(&mcast),
 		     "IPv6 multicast address check failed.");
 
-	ifaddr1 = net_if_ipv6_addr_add(net_if_get_default(),
+	ifaddr1 = net_if_ipv6_addr_add(default_iface,
 				      &addr6,
 				      NET_ADDR_MANUAL,
 				      0);
@@ -272,12 +274,12 @@ static void test_ipv6_addresses(void)
 					 (uint8_t *)&addr6_pref3, 255),
 		      "Too long prefix test failed");
 
-	ifmaddr1 = net_if_ipv6_maddr_add(net_if_get_default(), &mcast);
+	ifmaddr1 = net_if_ipv6_maddr_add(default_iface, &mcast);
 
 	/**TESTPOINTS: Check IPv6 addresses*/
 	zassert_not_null(ifmaddr1, "IPv6 multicast address add failed");
 
-	ifmaddr1 = net_if_ipv6_maddr_add(net_if_get_default(), &addr6);
+	ifmaddr1 = net_if_ipv6_maddr_add(default_iface, &addr6);
 
 	zassert_is_null(ifmaddr1,
 			"IPv6 multicast address could be added failed");
@@ -285,7 +287,7 @@ static void test_ipv6_addresses(void)
 	zassert_false(memcmp(net_ipv6_unspecified_address(), &any, sizeof(any)),
 		      "My IPv6 unspecified address check failed");
 
-	ifaddr2 = net_if_ipv6_addr_add(net_if_get_default(),
+	ifaddr2 = net_if_ipv6_addr_add(default_iface,
 				       &addr6,
 				       NET_ADDR_AUTOCONF,
 				       0);
@@ -293,18 +295,18 @@ static void test_ipv6_addresses(void)
 
 	ifaddr2->addr_state = NET_ADDR_PREFERRED;
 
-	tmp = net_if_ipv6_get_ll(net_if_get_default(), NET_ADDR_PREFERRED);
+	tmp = net_if_ipv6_get_ll(default_iface, NET_ADDR_PREFERRED);
 	zassert_false(tmp && memcmp(tmp, &addr6.s6_addr,
 				    sizeof(struct in6_addr)),
 		      "IPv6 ll address fetch failed");
 
 	ifaddr2->addr_state = NET_ADDR_DEPRECATED;
 
-	tmp = net_if_ipv6_get_ll(net_if_get_default(), NET_ADDR_PREFERRED);
+	tmp = net_if_ipv6_get_ll(default_iface, NET_ADDR_PREFERRED);
 	zassert_false(tmp && !memcmp(tmp, &any, sizeof(struct in6_addr)),
 		      "IPv6 preferred ll address fetch failed");
 
-	ifaddr1 = net_if_ipv6_addr_add(net_if_get_default(),
+	ifaddr1 = net_if_ipv6_addr_add(default_iface,
 				       &addr6_pref2,
 				       NET_ADDR_AUTOCONF,
 				       0);
@@ -315,7 +317,7 @@ static void test_ipv6_addresses(void)
 	/* Two tests for IPv6, first with interface given, then when
 	 * iface is NULL
 	 */
-	for (i = 0, iface = net_if_get_default(); i < 2; i++, iface = NULL) {
+	for (i = 0, iface = default_iface; i < 2; i++, iface = NULL) {
 		ifaddr2->addr_state = NET_ADDR_DEPRECATED;
 
 		out = net_if_ipv6_select_src_addr(iface, &addr6_pref1);
@@ -360,9 +362,9 @@ static void test_ipv6_addresses(void)
 			      iface);
 	}
 
-	zassert_true(net_if_ipv6_addr_rm(net_if_get_default(), &addr6),
+	zassert_true(net_if_ipv6_addr_rm(default_iface, &addr6),
 		     "IPv6 removing address failed\n");
-	zassert_true(net_if_ipv6_addr_rm(net_if_get_default(), &addr6_pref2),
+	zassert_true(net_if_ipv6_addr_rm(default_iface, &addr6_pref2),
 		     "IPv6 removing address failed\n");
 }
 
@@ -391,7 +393,7 @@ static void test_ipv4_addresses(void)
 	struct net_if *iface, *iface1, *iface2;
 	int i, ret;
 
-	ifaddr1 = net_if_ipv4_addr_add(net_if_get_default(),
+	ifaddr1 = net_if_ipv4_addr_add(default_iface,
 				       &addr4,
 				       NET_ADDR_MANUAL,
 				       0);
@@ -400,7 +402,7 @@ static void test_ipv4_addresses(void)
 	zassert_true(net_ipv4_is_my_addr(&addr4),
 		     "My IPv4 address check failed");
 
-	ifaddr1 = net_if_ipv4_addr_add(net_if_get_default(),
+	ifaddr1 = net_if_ipv4_addr_add(default_iface,
 				       &lladdr4,
 				       NET_ADDR_MANUAL,
 				       0);
@@ -415,7 +417,7 @@ static void test_ipv4_addresses(void)
 	/* Two tests for IPv4, first with interface given, then when
 	 * iface is NULL
 	 */
-	for (i = 0, iface = net_if_get_default(); i < 2; i++, iface = NULL) {
+	for (i = 0, iface = default_iface; i < 2; i++, iface = NULL) {
 		out = net_if_ipv4_select_src_addr(iface, &addr4);
 		zassert_not_null(out,  "IPv4 src addr selection failed, "
 				 "iface %p\n", iface);
@@ -464,7 +466,7 @@ static void test_ipv4_addresses(void)
 			      iface);
 	}
 
-	iface = net_if_get_default();
+	iface = default_iface;
 
 	net_if_ipv4_set_gw(iface, &gw);
 	net_if_ipv4_set_netmask(iface, &netmask);
@@ -485,10 +487,10 @@ static void test_ipv4_addresses(void)
 
 	zassert_false(net_ipv4_is_addr_mcast(&bcast_addr1), "IPv4 broadcast address");
 
-	ifmaddr1 = net_if_ipv4_maddr_add(net_if_get_default(), &maddr4a);
+	ifmaddr1 = net_if_ipv4_maddr_add(default_iface, &maddr4a);
 	zassert_not_null(ifmaddr1, "IPv4 multicast address add failed");
 
-	ifmaddr1 = net_if_ipv4_maddr_add(net_if_get_default(), &maddr4b);
+	ifmaddr1 = net_if_ipv4_maddr_add(default_iface, &maddr4b);
 	zassert_not_null(ifmaddr1, "IPv4 multicast address add failed");
 
 	iface = NULL;
@@ -559,7 +561,7 @@ static void test_ipv6_mesh_addresses(void)
 					 0, 0, 0, 0, 0x1 } } };
 	struct in6_addr ml_mcast = { { { 0xff, 0x03, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 					 0, 0, 0, 0, 0x1 } } };
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface = default_iface;
 
 	ifaddr = net_if_ipv6_addr_add(iface, &lla, NET_ADDR_AUTOCONF, 0);
 	zassert_not_null(ifaddr, "IPv6 ll address autoconf add failed");
@@ -600,6 +602,8 @@ static void test_ipv6_mesh_addresses(void)
 
 void test_main(void)
 {
+	default_iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
+
 	ztest_test_suite(test_ip_addr_fn,
 			 ztest_unit_test(test_ip_addresses),
 			 ztest_unit_test(test_ipv6_addresses),
diff --git a/tests/net/ipv6_fragment/prj.conf b/tests/net/ipv6_fragment/prj.conf
index aaa67239679..5987da5ed57 100644
--- a/tests/net/ipv6_fragment/prj.conf
+++ b/tests/net/ipv6_fragment/prj.conf
@@ -6,6 +6,7 @@ CONFIG_NET_TCP=n
 CONFIG_NET_IPV4=n
 CONFIG_NET_MAX_CONTEXTS=4
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 CONFIG_NET_LOG=y
 CONFIG_ENTROPY_GENERATOR=y
 CONFIG_TEST_RANDOM_GENERATOR=y
diff --git a/tests/net/lib/dns_addremove/prj.conf b/tests/net/lib/dns_addremove/prj.conf
index e1e5048112e..c7edd8e2502 100644
--- a/tests/net/lib/dns_addremove/prj.conf
+++ b/tests/net/lib/dns_addremove/prj.conf
@@ -3,6 +3,7 @@ CONFIG_NET_TEST=y
 CONFIG_ENTROPY_GENERATOR=y
 CONFIG_TEST_RANDOM_GENERATOR=y
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 CONFIG_DNS_RESOLVER=y
 CONFIG_DNS_RESOLVER_MAX_SERVERS=2
 CONFIG_DNS_NUM_CONCUR_QUERIES=1
diff --git a/tests/net/lib/dns_resolve/prj-no-ipv6.conf b/tests/net/lib/dns_resolve/prj-no-ipv6.conf
index 8fc1f5d9087..d7b7c5f8c1e 100644
--- a/tests/net/lib/dns_resolve/prj-no-ipv6.conf
+++ b/tests/net/lib/dns_resolve/prj-no-ipv6.conf
@@ -4,6 +4,7 @@ CONFIG_ENTROPY_GENERATOR=y
 CONFIG_TEST_RANDOM_GENERATOR=y
 
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 
 CONFIG_DNS_RESOLVER=y
 CONFIG_DNS_RESOLVER_MAX_SERVERS=2
diff --git a/tests/net/lib/dns_resolve/prj.conf b/tests/net/lib/dns_resolve/prj.conf
index 0ce99bfad13..c43911ac3cd 100644
--- a/tests/net/lib/dns_resolve/prj.conf
+++ b/tests/net/lib/dns_resolve/prj.conf
@@ -4,6 +4,7 @@ CONFIG_ENTROPY_GENERATOR=y
 CONFIG_TEST_RANDOM_GENERATOR=y
 
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 
 CONFIG_DNS_RESOLVER=y
 CONFIG_DNS_RESOLVER_MAX_SERVERS=4
diff --git a/tests/net/mgmt/prj.conf b/tests/net/mgmt/prj.conf
index 9a924c059e9..9759db9b1b1 100644
--- a/tests/net/mgmt/prj.conf
+++ b/tests/net/mgmt/prj.conf
@@ -16,4 +16,5 @@ CONFIG_NET_MGMT_EVENT=y
 CONFIG_NET_MGMT_EVENT_INFO=y
 CONFIG_NET_IPV6=y
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 CONFIG_ZTEST=y
diff --git a/tests/net/mgmt/src/mgmt.c b/tests/net/mgmt/src/mgmt.c
index 68ff9eeb2bf..c3920dcbad3 100644
--- a/tests/net/mgmt/src/mgmt.c
+++ b/tests/net/mgmt/src/mgmt.c
@@ -118,12 +118,15 @@ static void thrower_thread(void)
 
 			if (with_info) {
 				net_mgmt_event_notify_with_info(
-					event2throw, net_if_get_default(),
+					event2throw,
+					net_if_get_first_by_type(
+						      &NET_L2_GET_NAME(DUMMY)),
 					info_data,
 					TEST_MGMT_EVENT_INFO_SIZE);
 			} else {
 				net_mgmt_event_notify(event2throw,
-						      net_if_get_default());
+					net_if_get_first_by_type(
+						&NET_L2_GET_NAME(DUMMY)));
 			}
 
 		}
@@ -211,9 +214,10 @@ static int test_synchronous_event_listener(uint32_t times, bool on_iface)
 	k_sem_give(&thrower_lock);
 
 	if (on_iface) {
-		ret = net_mgmt_event_wait_on_iface(net_if_get_default(),
-						   event_mask, NULL, NULL,
-						   NULL, K_SECONDS(1));
+		ret = net_mgmt_event_wait_on_iface(
+			net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY)),
+			event_mask, NULL, NULL,
+			NULL, K_SECONDS(1));
 	} else {
 		ret = net_mgmt_event_wait(event_mask, NULL, NULL, NULL, NULL,
 					  K_SECONDS(1));
@@ -285,8 +289,9 @@ static int test_core_event(uint32_t event, bool (*func)(void))
 
 static bool _iface_ip6_add(void)
 {
-	if (net_if_ipv6_addr_add(net_if_get_default(),
-				 &addr6, NET_ADDR_MANUAL, 0)) {
+	if (net_if_ipv6_addr_add(
+		    net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY)),
+		    &addr6, NET_ADDR_MANUAL, 0)) {
 		return true;
 	}
 
@@ -295,7 +300,9 @@ static bool _iface_ip6_add(void)
 
 static bool _iface_ip6_del(void)
 {
-	if (net_if_ipv6_addr_rm(net_if_get_default(), &addr6)) {
+	if (net_if_ipv6_addr_rm(
+		    net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY)),
+		    &addr6)) {
 		return true;
 	}
 
diff --git a/tests/net/mld/prj.conf b/tests/net/mld/prj.conf
index a99599b160a..5eeab7f81ec 100644
--- a/tests/net/mld/prj.conf
+++ b/tests/net/mld/prj.conf
@@ -7,6 +7,7 @@ CONFIG_NET_UDP=y
 CONFIG_NET_TCP=n
 CONFIG_NET_IPV4=n
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 CONFIG_NET_LOG=y
 CONFIG_ENTROPY_GENERATOR=y
 CONFIG_TEST_RANDOM_GENERATOR=y
diff --git a/tests/net/mld/src/main.c b/tests/net/mld/src/main.c
index f6a2487a5be..767d6a28678 100644
--- a/tests/net/mld/src/main.c
+++ b/tests/net/mld/src/main.c
@@ -206,7 +206,7 @@ static void test_mld_setup(void)
 
 	setup_mgmt_events();
 
-	iface = net_if_get_default();
+	iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
 
 	zassert_not_null(iface, "Interface is NULL");
 
@@ -400,9 +400,11 @@ static void send_query(struct net_if *iface)
  */
 static void join_mldv2_capable_routers_group(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface;
 	int ret;
 
+	iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
+
 	net_ipv6_addr_create(&mcast_addr, 0xff02, 0, 0, 0, 0, 0, 0, 0x0016);
 	ret = net_ipv6_mld_join(iface, &mcast_addr);
 
@@ -419,9 +421,11 @@ static void join_mldv2_capable_routers_group(void)
 
 static void leave_mldv2_capable_routers_group(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface;
 	int ret;
 
+	iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
+
 	net_ipv6_addr_create(&mcast_addr, 0xff02, 0, 0, 0, 0, 0, 0, 0x0016);
 	ret = net_ipv6_mld_leave(iface, &mcast_addr);
 
@@ -462,7 +466,7 @@ static void test_catch_query(void)
 
 	net_icmpv6_register_handler(&mld_query_input_handler);
 
-	send_query(net_if_get_default());
+	send_query(net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY)));
 
 	if (IS_ENABLED(CONFIG_NET_TC_THREAD_PREEMPTIVE)) {
 		/* Let the network stack to proceed */
@@ -495,7 +499,7 @@ static void test_verify_send_report(void)
 
 	test_join_group();
 
-	send_query(net_if_get_default());
+	send_query(net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY)));
 
 	k_yield();
 
diff --git a/tests/net/neighbor/prj.conf b/tests/net/neighbor/prj.conf
index 9b0844ee27d..0116a6e1011 100644
--- a/tests/net/neighbor/prj.conf
+++ b/tests/net/neighbor/prj.conf
@@ -14,3 +14,4 @@ CONFIG_TEST_RANDOM_GENERATOR=y
 CONFIG_NET_IF_UNICAST_IPV4_ADDR_COUNT=3
 CONFIG_NET_IPV6_MAX_NEIGHBORS=4
 CONFIG_ZTEST=y
+CONFIG_NET_L2_ETHERNET=n
diff --git a/tests/net/pm/prj.conf b/tests/net/pm/prj.conf
index ac7223dc412..543a1d49116 100644
--- a/tests/net/pm/prj.conf
+++ b/tests/net/pm/prj.conf
@@ -3,6 +3,7 @@ CONFIG_PM_DEVICE=y
 CONFIG_NETWORKING=y
 CONFIG_NET_TEST=y
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 CONFIG_NET_UDP=y
 CONFIG_NET_IPV4=y
 CONFIG_NET_SOCKETS=y
diff --git a/tests/net/pm/src/main.c b/tests/net/pm/src/main.c
index 3298409251e..045395f4d2d 100644
--- a/tests/net/pm/src/main.c
+++ b/tests/net/pm/src/main.c
@@ -108,10 +108,12 @@ NET_DEVICE_INIT(fake_dev, "fake_dev",
 
 void test_setup(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface;
 	struct in_addr in4addr_my = { { { 192, 168, 0, 2 } } };
 	struct net_if_addr *ifaddr;
 
+	iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
+
 	net_if_up(iface);
 
 	ifaddr = net_if_ipv4_addr_add(iface, &in4addr_my, NET_ADDR_MANUAL, 0);
@@ -120,7 +122,8 @@ void test_setup(void)
 
 void test_pm(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface =
+		net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
 	const struct device *dev = net_if_get_device(iface);
 	char data[] = "some data";
 	struct sockaddr_in addr4;
diff --git a/tests/net/route/prj.conf b/tests/net/route/prj.conf
index c78b9dbc85f..0ce002a9f65 100644
--- a/tests/net/route/prj.conf
+++ b/tests/net/route/prj.conf
@@ -6,6 +6,7 @@ CONFIG_NET_TCP=n
 CONFIG_NET_IPV4=n
 CONFIG_NET_MAX_CONTEXTS=4
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 CONFIG_NET_LOG=y
 CONFIG_ENTROPY_GENERATOR=y
 CONFIG_TEST_RANDOM_GENERATOR=y
diff --git a/tests/net/route/src/main.c b/tests/net/route/src/main.c
index 1170c890b1b..12e856c842d 100644
--- a/tests/net/route/src/main.c
+++ b/tests/net/route/src/main.c
@@ -237,8 +237,8 @@ static void test_init(void)
 	struct net_if_addr *ifaddr;
 	int i;
 
-	my_iface = net_if_get_default();
-	peer_iface = net_if_get_default() + 1;
+	my_iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
+	peer_iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY)) + 1;
 
 	DBG("Interfaces: [%d] my %p, [%d] peer %p\n",
 	    net_if_get_by_iface(my_iface), my_iface,
@@ -341,7 +341,7 @@ static void test_populate_nbr_cache(void)
 
 	zassert_true(net_test_send_ns(peer_iface, &peer_addr), NULL);
 
-	nbr = net_ipv6_nbr_add(net_if_get_default(),
+	nbr = net_ipv6_nbr_add(net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY)),
 			       &peer_addr,
 			       &net_route_data_peer.ll_addr,
 			       false,
diff --git a/tests/net/shell/src/main.c b/tests/net/shell/src/main.c
index 48576d2c54e..2eb505845da 100644
--- a/tests/net/shell/src/main.c
+++ b/tests/net/shell/src/main.c
@@ -143,7 +143,7 @@ NET_DEVICE_INIT(net_udp_test, "net_udp_test",
 
 static void test_setup(void)
 {
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface;
 	struct net_if_addr *ifaddr;
 
 	struct sockaddr_in6 any_addr6;
@@ -166,6 +166,7 @@ static void test_setup(void)
 	struct sockaddr_in peer_addr4;
 	struct in_addr in4addr_peer = { { { 192, 0, 2, 9 } } };
 
+	iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
 	test_failed = false;
 
 	net_ipaddr_copy(&any_addr6.sin6_addr, &in6addr_any);
diff --git a/tests/net/socket/net_mgmt/src/main.c b/tests/net/socket/net_mgmt/src/main.c
index dcbd3b20925..d2a254bd472 100644
--- a/tests/net/socket/net_mgmt/src/main.c
+++ b/tests/net/socket/net_mgmt/src/main.c
@@ -20,6 +20,8 @@ LOG_MODULE_REGISTER(net_test, CONFIG_NET_SOCKETS_LOG_LEVEL);
 #define STACK_SIZE 1024
 #define THREAD_PRIORITY K_PRIO_COOP(8)
 
+static struct net_if *default_iface;
+
 static ZTEST_BMEM int fd;
 static ZTEST_BMEM struct in6_addr addr_v6;
 static ZTEST_DMEM struct in_addr addr_v4 = { { { 192, 0, 2, 3 } } };
@@ -274,7 +276,7 @@ static void trigger_events(void)
 	struct net_if *iface;
 	int ret;
 
-	iface = net_if_get_default();
+	iface = default_iface;
 
 	net_ipv6_addr_create(&addr_v6, 0x2001, 0x0db8, 0, 0, 0, 0, 0, 0x0003);
 
@@ -342,11 +344,25 @@ static char *get_ip_addr(char *ipaddr, size_t len, sa_family_t family,
 	return buf;
 }
 
+static void iface_cb(struct net_if *iface, void *user_data)
+{
+	struct net_if **my_iface = user_data;
+
+	if (net_if_l2(iface) == &NET_L2_GET_NAME(ETHERNET)) {
+		if (PART_OF_ARRAY(NET_IF_GET_NAME(eth_fake, 0), iface)) {
+			*my_iface = iface;
+		}
+	}
+}
+
 static void test_net_mgmt_setup(void)
 {
 	struct sockaddr_nm sockaddr;
 	int ret;
 
+	net_if_foreach(iface_cb, &default_iface);
+	zassert_not_null(default_iface, "Cannot find test interface");
+
 	fd = socket(AF_NET_MGMT, SOCK_DGRAM, NET_MGMT_EVENT_PROTO);
 	zassert_false(fd < 0, "Cannot create net_mgmt socket (%d)", errno);
 
@@ -363,7 +379,7 @@ static void test_net_mgmt_setup(void)
 	memset(&sockaddr, 0, sizeof(sockaddr));
 
 	sockaddr.nm_family = AF_NET_MGMT;
-	sockaddr.nm_ifindex = net_if_get_by_iface(net_if_get_default());
+	sockaddr.nm_ifindex = net_if_get_by_iface(default_iface);
 	sockaddr.nm_pid = (uintptr_t)k_current_get();
 	sockaddr.nm_mask = NET_EVENT_IPV6_DAD_SUCCEED |
 			   NET_EVENT_IPV6_ADDR_ADD |
diff --git a/tests/net/socket/udp/src/main.c b/tests/net/socket/udp/src/main.c
index 688f5477523..20ece463506 100644
--- a/tests/net/socket/udp/src/main.c
+++ b/tests/net/socket/udp/src/main.c
@@ -1019,12 +1019,23 @@ ETH_NET_DEVICE_INIT(eth_fake, "eth_fake", eth_fake_init, NULL,
 		    &eth_fake_data, NULL, CONFIG_ETH_INIT_PRIORITY,
 		    &eth_fake_api_funcs, NET_ETH_MTU);
 
+static void iface_cb(struct net_if *iface, void *user_data)
+{
+	struct net_if **my_iface = user_data;
+
+	if (net_if_l2(iface) == &NET_L2_GET_NAME(ETHERNET)) {
+		if (PART_OF_ARRAY(NET_IF_GET_NAME(eth_fake, 0), iface)) {
+			*my_iface = iface;
+		}
+	}
+}
+
 static void test_setup_eth(void)
 {
 	struct net_if_addr *ifaddr;
 	int ret;
 
-	eth_iface = net_if_get_first_by_type(&NET_L2_GET_NAME(ETHERNET));
+	net_if_foreach(iface_cb, &eth_iface);
 	zassert_not_null(eth_iface, "No ethernet interface found");
 
 	ifaddr = net_if_ipv6_addr_add(eth_iface, &my_addr1,
diff --git a/tests/net/tcp2/prj.conf b/tests/net/tcp2/prj.conf
index 57a62715458..14f334ef5cd 100644
--- a/tests/net/tcp2/prj.conf
+++ b/tests/net/tcp2/prj.conf
@@ -2,6 +2,7 @@ CONFIG_TEST=y
 CONFIG_NETWORKING=y
 CONFIG_NET_TEST=y
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 
 CONFIG_NET_TCP=y
 CONFIG_NET_MAX_CONN=64
diff --git a/tests/net/traffic_class/src/main.c b/tests/net/traffic_class/src/main.c
index 7778af36fcc..6f442fc9bce 100644
--- a/tests/net/traffic_class/src/main.c
+++ b/tests/net/traffic_class/src/main.c
@@ -276,7 +276,7 @@ static void address_setup(void)
 	struct net_if_addr *ifaddr;
 	struct net_if *iface1;
 
-	iface1 = net_if_get_default();
+	iface1 = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
 
 	zassert_not_null(iface1, "Interface 1");
 
@@ -379,7 +379,7 @@ static void setup_net_context(struct net_context **ctx)
 	int ret;
 	struct net_if *iface1;
 
-	iface1 = net_if_get_default();
+	iface1 = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
 
 	ret = net_context_get(AF_INET6, SOCK_DGRAM, IPPROTO_UDP, ctx);
 	zassert_equal(ret, 0, "Create IPv6 UDP context %p failed (%d)\n",
diff --git a/tests/net/udp/prj.conf b/tests/net/udp/prj.conf
index 42f43a32b04..13eb9bafad5 100644
--- a/tests/net/udp/prj.conf
+++ b/tests/net/udp/prj.conf
@@ -1,6 +1,7 @@
 CONFIG_NETWORKING=y
 CONFIG_NET_TEST=y
 CONFIG_NET_L2_DUMMY=y
+CONFIG_NET_L2_ETHERNET=n
 CONFIG_NET_UDP=y
 CONFIG_NET_TCP=n
 CONFIG_NET_MAX_CONN=64
diff --git a/tests/net/udp/src/main.c b/tests/net/udp/src/main.c
index 4e53895babe..d2f614c9372 100644
--- a/tests/net/udp/src/main.c
+++ b/tests/net/udp/src/main.c
@@ -431,7 +431,7 @@ void test_udp(void)
 	test_failed = false;
 
 	struct net_conn_handle *handlers[CONFIG_NET_MAX_CONN];
-	struct net_if *iface = net_if_get_default();
+	struct net_if *iface;
 	struct net_if_addr *ifaddr;
 	struct ud *ud;
 	int ret, i = 0;
@@ -457,6 +457,8 @@ void test_udp(void)
 	struct sockaddr_in peer_addr4;
 	struct in_addr in4addr_peer = { { { 192, 0, 2, 9 } } };
 
+	iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
+
 	net_ipaddr_copy(&any_addr6.sin6_addr, &in6addr_any);
 	any_addr6.sin6_family = AF_INET6;