--- zzzz-none-000/linux-4.19.183/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c	2021-03-24 10:07:39.000000000 +0000
+++ bcm63-7530ax-756/linux-4.19.183/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c	2023-06-28 08:54:21.000000000 +0000
@@ -57,6 +57,15 @@
 {
 	int err;
 
+#if defined(CONFIG_BCM_KF_MAP) && IS_ENABLED(CONFIG_BCM_MAP)
+	/*
+	 * MAP_FORWARD_MODE1 indicates Fragment extension header inserted
+	 * for translated MAP-T IPv6 packet in MAP-T driver.
+	 * Netfilter should not defragment in this case.
+	 */
+	if (skbuff_bcm_ext_map_get(skb, map_forward) != MAP_FORWARD_MODE1)
+	{
+#endif
 #if IS_ENABLED(CONFIG_NF_CONNTRACK)
 	/* Previously seen (loopback)?	*/
 	if (skb_nfct(skb) && !nf_ct_is_template((struct nf_conn *)skb_nfct(skb)))
@@ -71,6 +80,11 @@
 	/* queued */
 	if (err == -EINPROGRESS)
 		return NF_STOLEN;
+#if defined(CONFIG_BCM_KF_MAP) && IS_ENABLED(CONFIG_BCM_MAP)
+	}
+	else
+		err = 0;
+#endif
 
 	return err == 0 ? NF_ACCEPT : NF_DROP;
 }