Fix crash on startup on Solaris 11

CHANGELOG

@@ -14,6 +14,9 @@ version 2.66
 	    dnsmasq configuration file or restart the daemon. Thanks to
 	    Steven Barth for extensive testing and development work on
 	    this idea.
+
+	    Fix crash on startup on Solaris 11. Regression probably
+	    introduced in 2.61.  Thanks to Geoff Johnstone for the patch.
   
 
 version 2.65

src/bpf.c

@@ -111,7 +111,7 @@ int iface_enumerate(int family, void *parm, int (*callback)())
 	{
 	  int iface_index = if_nametoindex(addrs->ifa_name);
 
-	  if (iface_index == 0)
+	  if (iface_index == 0 || !addrs->ifa_addr || !addrs->ifa_netmask || !addrs->ifa_broadaddr)
 	    continue;
 
 	  if (family == AF_INET)