diff options
| -rw-r--r-- | source3/lib/util_sock.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/source3/lib/util_sock.c b/source3/lib/util_sock.c index 71f6a8f29c..eb74b75960 100644 --- a/source3/lib/util_sock.c +++ b/source3/lib/util_sock.c @@ -787,6 +787,32 @@ int open_socket_in(int type, #endif /* SO_REUSEPORT */ } +#ifdef HAVE_IPV6 + /* + * As IPV6_V6ONLY is the default on some systems, + * we better try to be consistent and always use it. + * + * This also avoids using IPv4 via AF_INET6 sockets + * and makes sure %I never resolves to a '::ffff:192.168.0.1' + * string. + */ + if (sock.ss_family == AF_INET6) { + int val = 1; + int ret; + + ret = setsockopt(res, IPPROTO_IPV6, IPV6_V6ONLY, + (const void *)&val, sizeof(val)); + if (ret == -1) { + if(DEBUGLVL(0)) { + dbgtext("open_socket_in(): IPV6_ONLY failed: "); + dbgtext("%s\n", strerror(errno)); + } + close(res); + return -1; + } + } +#endif + /* now we've got a socket - we need to bind it */ if (bind(res, (struct sockaddr *)&sock, slen) == -1 ) { if( DEBUGLVL(dlevel) && (port == SMB_PORT1 || |