net/mdnsresponder/patches/100-Binding-IPv6-sockets-to-interface-due-to-link-local.patch

   1 From 094714725481da5cfbeaa9e4c713633f3fd0dcc4 Mon Sep 17 00:00:00 2001
   2 From: Markus Stenberg <markus.stenberg@iki.fi>
   3 Date: Wed, 19 Feb 2014 19:21:40 +0200
   4 Subject: mdnsresponder: [PATCH] Binding IPv6 sockets to interface
   5
   6 Due to link-local addresses, otherwise responses may wind up in wrong
   7 places and mdnsd is quite confused.
   8
   9 ---
  10  .../patches/003-ipv6-bind-to-interface.patch       |   22 ++++++++++++++++++++
  11  1 file changed, 22 insertions(+)
  12
  13 --- mDNSResponder-544.source/mDNSPosix/mDNSPosix.c      2013-12-14 22:54:24.000000000 +0200
  14 +++ mDNSResponder-544/mDNSPosix/mDNSPosix.c     2014-02-19 18:59:55.000000000 +0200
  15 @@ -784,6 +784,17 @@
  16              if (err < 0) { err = errno; perror("setsockopt - IPV6_MULTICAST_HOPS"); }
  17          }
  18
  19 +#ifdef __linux__
  20 +#ifdef SO_BINDTODEVICE
  21 +        if (err == 0)
  22 +        {
  23 +            char ifname[IFNAMSIZ];
  24 +            if (if_indextoname(interfaceIndex, ifname))
  25 +                err = setsockopt(*sktPtr, SOL_SOCKET, SO_BINDTODEVICE, ifname, strlen(ifname));
  26 +        }
  27 +#endif /* SO_BINDTODEVICE */
  28 +#endif /* __linux__ */
  29 +
  30          // And start listening for packets
  31          if (err == 0)
  32          {