[src/trunk]: src/external/apache2/mDNSResponder/dist/mDNSPosix Don't try and ...

[roy <roy%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c8a89f0be1bb
branches:  trunk
changeset: 326102:c8a89f0be1bb
user:      roy <roy%NetBSD.org@localhost>
date:      Sat Jan 18 16:51:44 2014 +0000

description:
Don't try and use an address we can't use.

diffstat:

 external/apache2/mDNSResponder/dist/mDNSPosix/mDNSUNP.c |  18 +++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)

diffs (28 lines):

diff -r f305d7f865de -r c8a89f0be1bb external/apache2/mDNSResponder/dist/mDNSPosix/mDNSUNP.c
--- a/external/apache2/mDNSResponder/dist/mDNSPosix/mDNSUNP.c   Sat Jan 18 15:55:32 2014 +0000
+++ b/external/apache2/mDNSResponder/dist/mDNSPosix/mDNSUNP.c   Sat Jan 18 16:51:44 2014 +0000
@@ -411,6 +411,24 @@
         if ((flags & IFF_UP) == 0)
             continue;   /* ignore if interface not up */
 
+       /* Skip addresses we can't use */
+#ifdef SIOCGIFAFLAG_IN6
+        if (ifr->ifr_addr.sa_family == AF_INET6) {
+               struct in6_ifreq ifr6;
+
+               if (sockf6 == -1)
+                       sockf6 = socket(AF_INET6, SOCK_DGRAM, 0);
+               memset(&ifr6, 0, sizeof(ifr6));
+               memcpy(&ifr6.ifr_name, &ifr->ifr_name, sizeof(ifr6.ifr_name));
+               memcpy(&ifr6.ifr_addr, &ifr->ifr_addr, sizeof(ifr6.ifr_addr));
+               if (ioctl(sockf6, SIOCGIFAFLAG_IN6, &ifr6) < 0)
+                       goto gotError;
+               if (ifr6.ifr_ifru.ifru_flags6 &
+                   (IN6_IFF_NOTREADY | IN6_IFF_DETACHED))
+                       continue;
+       }
+#endif
+
         ifi = (struct ifi_info*)calloc(1, sizeof(struct ifi_info));
         if (ifi == NULL) {
             goto gotError;