--- zzzz-none-000/linux-4.4.271/net/ipv6/output_core.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/net/ipv6/output_core.c	2023-04-19 10:22:30.000000000 +0000
@@ -9,6 +9,7 @@
 #include <net/addrconf.h>
 #include <net/secure_seq.h>
 #include <linux/netfilter.h>
+#include <avm/pa/avm_pa.h>
 
 static u32 __ipv6_select_ident(struct net *net,
 			       const struct in6_addr *dst,
@@ -156,6 +157,10 @@
 
 	skb->protocol = htons(ETH_P_IPV6);
 
+	/* not called for TCP, SCTP and DCCP, see ip6_xmit() */
+	if (avm_pa_dev_local_out(AVM_PA_NET_IP6_DEVINFO(net), skb) == AVM_PA_RX_STOLEN)
+		return 0;
+
 	return nf_hook(NFPROTO_IPV6, NF_INET_LOCAL_OUT,
 		       net, sk, skb, NULL, skb_dst(skb)->dev,
 		       dst_output);