30 lines
1.1 KiB
Diff
30 lines
1.1 KiB
Diff
diff -up bind-9.9.0b1/lib/isc/unix/socket.c.v6only bind-9.9.0b1/lib/isc/unix/socket.c
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--- bind-9.9.0b1/lib/isc/unix/socket.c.v6only 2011-11-10 14:35:26.457842491 +0100
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+++ bind-9.9.0b1/lib/isc/unix/socket.c 2011-11-10 14:38:55.928827943 +0100
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@@ -5726,7 +5726,24 @@ isc__socket_ipv6only(isc_socket_t *sock0
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#ifdef IPV6_V6ONLY
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if (sock->pf == AF_INET6) {
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- if (setsockopt(sock->fd, IPPROTO_IPV6, IPV6_V6ONLY,
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+ int current;
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+ socklen_t len = sizeof(int);
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+ if (getsockopt(sock->fd, IPPROTO_IPV6, IPV6_V6ONLY,
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+ (void *)¤t, &len) < 0 ) {
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+ char strbuf[ISC_STRERRORSIZE];
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+ isc__strerror(errno, strbuf, sizeof(strbuf));
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+ UNEXPECTED_ERROR(__FILE__, __LINE__,
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+ "getsockopt(%d, IPV6_V6ONLY) "
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+ "%s: %s", sock->fd,
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+ isc_msgcat_get(isc_msgcat,
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+ ISC_MSGSET_GENERAL,
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+ ISC_MSG_FAILED,
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+ "failed"),
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+ strbuf);
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+ }
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+
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+ if (current != onoff &&
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+ setsockopt(sock->fd, IPPROTO_IPV6, IPV6_V6ONLY,
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(void *)&onoff, sizeof(int)) < 0) {
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char strbuf[ISC_STRERRORSIZE];
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isc__strerror(errno, strbuf, sizeof(strbuf));
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