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--- sys/netinet/in_mcast.c.orig 2009-08-03 08:13:06.000000000 +0000
+++ sys/netinet/in_mcast.c 2009-09-09 01:35:06.000000000 +0000
@@ -2139,6 +2143,9 @@
}
- if (!in_nullhost(gsa->sin.sin_addr))
+ if (!in_nullhost(gsa->sin.sin_addr)) {
INADDR_TO_IFP(mreqs.imr_interface, ifp);
+ if (ifp == NULL)
+ return (EADDRNOTAVAIL);
+ }
CTR3(KTR_IGMPV3, "%s: imr_interface = %s, ifp = %p",
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