tree 370dd2b5d5ad64cabef6fa837aac4ca8a1b9a958
parent 21f374c6cfbf98c1efceee0b528ce784d215935c
author Hannes Frederic Sowa <hannes@stressinduktion.org> 1392755888 +0100
committer David S. Miller <davem@davemloft.net> 1392845322 -0500

ipv6: honor IPV6_PKTINFO with v4 mapped addresses on sendmsg

In case we decide in udp6_sendmsg to send the packet down the ipv4
udp_sendmsg path because the destination is either of family AF_INET or
the destination is an ipv4 mapped ipv6 address, we don't honor the
maybe specified ipv4 mapped ipv6 address in IPV6_PKTINFO.

We simply can check for this option in ip_cmsg_send because no calls to
ipv6 module functions are needed to do so.

Reported-by: Gert Doering <gert@space.net>
Cc: Tore Anderson <tore@fud.no>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>