Re: [PATCH rfc 2/4] net-errqueue: add IP(V6)_PKTINFO support

+static void ipv6_recv_error_pktinfo(struct msghdr *msg, struct sock *sk,
+                                   struct sk_buff *skb)
+{
+       struct ipv6_pinfo *np = inet6_sk(sk);
+
+       if (np->rxopt.bits.rxinfo && skb->dev) {
+               struct in6_pktinfo info;
+
+               memset(&info, 0, sizeof(info));
+               if (skb->protocol == htons(ETH_P_IPV6))
+                       info.ipi6_addr = ipv6_hdr(skb)->daddr;
+               else
+                       ipv6_addr_set_v4mapped(ip_hdr(skb)->daddr,
+                                              &info.ipi6_addr);
+
+               info.ipi6_ifindex = skb->dev->ifindex;
+               net_info_ratelimited("yes: ifindex=%d\n", info.ipi6_ifindex);

forgot to remove this debug message.. removing it from my local copy right away.

+               put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, sizeof(info), &info);
+       }
+}
+