diff --git a/include/net/arp.h b/include/net/arp.h
index 4e8ebadf1f0..2a2673699c1 100644
--- a/include/net/arp.h
+++ b/include/net/arp.h
@@ -39,10 +39,12 @@ struct net_arp_hdr {
 struct net_pkt *net_arp_prepare(struct net_pkt *pkt);
 enum net_verdict net_arp_input(struct net_pkt *pkt);
 
+void net_arp_clear_cache(void);
 void net_arp_init(void);
 
 #else /* CONFIG_NET_ARP */
 
+#define net_arp_clear_cache(...)
 #define net_arp_init(...)
 
 #endif /* CONFIG_NET_ARP */
diff --git a/subsys/net/ip/l2/arp.c b/subsys/net/ip/l2/arp.c
index 940501d6c67..7e78fd5ad64 100644
--- a/subsys/net/ip/l2/arp.c
+++ b/subsys/net/ip/l2/arp.c
@@ -483,7 +483,20 @@ enum net_verdict net_arp_input(struct net_pkt *pkt)
 	return NET_OK;
 }
 
-void net_arp_init(void)
+void net_arp_clear_cache(void)
 {
+	int i;
+
+	for (i = 0; i < CONFIG_NET_ARP_TABLE_SIZE; i++) {
+		if (arp_table[i].pending) {
+			net_pkt_unref(arp_table[i].pending);
+		}
+	}
+
 	memset(&arp_table, 0, sizeof(arp_table));
 }
+
+void net_arp_init(void)
+{
+	net_arp_clear_cache();
+}
diff --git a/subsys/net/ip/l2/ethernet.c b/subsys/net/ip/l2/ethernet.c
index b255349e5d8..304220da43c 100644
--- a/subsys/net/ip/l2/ethernet.c
+++ b/subsys/net/ip/l2/ethernet.c
@@ -310,4 +310,16 @@ static inline u16_t ethernet_reserve(struct net_if *iface, void *unused)
 	return sizeof(struct net_eth_hdr);
 }
 
-NET_L2_INIT(ETHERNET_L2, ethernet_recv, ethernet_send, ethernet_reserve, NULL);
+static inline int ethernet_enable(struct net_if *iface, bool state)
+{
+	ARG_UNUSED(iface);
+
+	if (!state) {
+		net_arp_clear_cache();
+	}
+
+	return 0;
+}
+
+NET_L2_INIT(ETHERNET_L2, ethernet_recv, ethernet_send, ethernet_reserve,
+		ethernet_enable);