diff --git a/include/zephyr/net/net_pkt.h b/include/zephyr/net/net_pkt.h
index 98646b25b26..591002a9d66 100644
--- a/include/zephyr/net/net_pkt.h
+++ b/include/zephyr/net/net_pkt.h
@@ -836,6 +836,20 @@ static inline void net_pkt_set_ipv6_fragment_id(struct net_pkt *pkt,
 }
 #endif /* CONFIG_NET_IPV6_FRAGMENT */
 
+static inline bool net_pkt_is_ip_reassembled(struct net_pkt *pkt)
+{
+	if ((IS_ENABLED(CONFIG_NET_IPV4_FRAGMENT) &&
+	     net_pkt_family(pkt) == AF_INET &&
+	     net_pkt_ipv4_fragment_more(pkt)) ||
+	    (IS_ENABLED(CONFIG_NET_IPV6_FRAGMENT) &&
+	     net_pkt_family(pkt) == AF_INET6 &&
+	     net_pkt_ipv6_fragment_start(pkt))) {
+		return true;
+	}
+
+	return false;
+}
+
 static inline uint8_t net_pkt_priority(struct net_pkt *pkt)
 {
 	return pkt->priority;
diff --git a/subsys/net/ip/net_core.c b/subsys/net/ip/net_core.c
index 3d37743a39d..baa8cd695c5 100644
--- a/subsys/net/ip/net_core.c
+++ b/subsys/net/ip/net_core.c
@@ -76,8 +76,7 @@ static inline enum net_verdict process_data(struct net_pkt *pkt,
 	/* If the packet is routed back to us when we have reassembled an IPv4 or IPv6 packet,
 	 * then do not pass it to L2 as the packet does not have link layer headers in it.
 	 */
-	if ((IS_ENABLED(CONFIG_NET_IPV4_FRAGMENT) && net_pkt_ipv4_fragment_more(pkt)) ||
-	    (IS_ENABLED(CONFIG_NET_IPV6_FRAGMENT) && net_pkt_ipv6_fragment_start(pkt))) {
+	if (net_pkt_is_ip_reassembled(pkt)) {
 		locally_routed = true;
 	}