diff --git a/subsys/net/l2/ppp/lcp.c b/subsys/net/l2/ppp/lcp.c
index b2890a7bf37..76fbfc21936 100644
--- a/subsys/net/l2/ppp/lcp.c
+++ b/subsys/net/l2/ppp/lcp.c
@@ -210,7 +210,7 @@ static void lcp_finished(struct ppp_fsm *fsm)
 	/* take the remainder down */
 	ppp_mgmt_raise_carrier_off_event(ctx->iface);
 
-	net_if_down(ctx->iface);
+	ppp_if_carrier_down(ctx->iface);
 }
 
 #if defined(CONFIG_NET_L2_PPP_OPTION_MRU)
diff --git a/subsys/net/l2/ppp/ppp_internal.h b/subsys/net/l2/ppp/ppp_internal.h
index 00ffb111256..a2535de3ce4 100644
--- a/subsys/net/l2/ppp/ppp_internal.h
+++ b/subsys/net/l2/ppp/ppp_internal.h
@@ -212,3 +212,5 @@ static inline bool ppp_my_option_is_acked(struct ppp_fsm *fsm,
 {
 	return ppp_my_option_flags(fsm, code) & PPP_MY_OPTION_ACKED;
 }
+
+void ppp_if_carrier_down(struct net_if *iface);
diff --git a/subsys/net/l2/ppp/ppp_l2.c b/subsys/net/l2/ppp/ppp_l2.c
index ab1d7bad4ee..3f48665213b 100644
--- a/subsys/net/l2/ppp/ppp_l2.c
+++ b/subsys/net/l2/ppp/ppp_l2.c
@@ -17,6 +17,7 @@ LOG_MODULE_REGISTER(net_l2_ppp, CONFIG_NET_L2_PPP_LOG_LEVEL);
 #include <zephyr/net/ppp.h>
 
 #include "net_private.h"
+#include "ipv4_autoconf_internal.h"
 
 #include "ppp_stats.h"
 #include "ppp_internal.h"
@@ -259,6 +260,14 @@ static enum net_l2_flags ppp_flags(struct net_if *iface)
 
 NET_L2_INIT(PPP_L2, ppp_recv, ppp_send, ppp_enable, ppp_flags);
 
+/* A workaround for PPP L2 not yet supporting net_if_carrier_on/off(). */
+void ppp_if_carrier_down(struct net_if *iface)
+{
+	net_if_flag_clear(iface, NET_IF_UP);
+	net_mgmt_event_notify(NET_EVENT_IF_DOWN, iface);
+	net_ipv4_autoconf_reset(iface);
+}
+
 static void carrier_on_off(struct k_work *work)
 {
 	struct ppp_context *ctx = CONTAINER_OF(work, struct ppp_context,
@@ -291,7 +300,7 @@ static void carrier_on_off(struct k_work *work)
 			ppp_change_phase(ctx, PPP_DEAD);
 
 			ppp_mgmt_raise_carrier_off_event(ctx->iface);
-			net_if_down(ctx->iface);
+			ppp_if_carrier_down(ctx->iface);
 		}
 	}
 }