When bind 9.9.0b2 starts up, the syslog shows the following messages:
Nov 22 10:18:19 nstest2 named[17190]: using default UDP/IPv6 port range: [1024,
65535]
Nov 22 10:18:19 nstest2 named[17190]: listening on IPv6 interfaces, port 53
Nov 22 10:18:19 nstest2 named[17190]: socket.c:5728: unexpected error:
Nov 22 10:18:19 nstest2 named[17190]: setsockopt(513, IPV6_V6ONLY) failed:
Invalid argument
The section of bind-9.9.0b2/lib/isc/unix/socket.c referenced in the error
message is:
#ifdef IPV6_V6ONLY
if (sock->pf == AF_INET6) {
if (setsockopt(sock->fd, IPPROTO_IPV6, IPV6_V6ONLY,
(void *)&onoff, sizeof(int)) < 0) {
char strbuf[ISC_STRERRORSIZE];
isc__strerror(errno, strbuf, sizeof(strbuf));
UNEXPECTED_ERROR(__FILE__, __LINE__,
"setsockopt(%d, IPV6_V6ONLY) "
"%s: %s", sock->fd,
isc_msgcat_get(isc_msgcat,
ISC_MSGSET_GENERAL,
ISC_MSG_FAILED,
"failed"),
strbuf);
}
}
FIX_IPV6_RECVPKTINFO(sock); /* AIX */
#endif
I have reproduced this on Ubuntu 11.04 (Natty) and 11.10 (Oneiric) amd64. The
error does not occur with bind 9.8.1-P1. This same section of code appears in
bind-9.8.0-P1/lib/isc/unix/socket.c and is identical to the above. My systems
are operating in an IPv6/IPv4 dual-stack environment. The configuration file
named.conf.options contains "listen-on-v6 { any; };". These systems seem to
respond normally to IPv6 queries. Thanks for any advice you may have about how
to troubleshoot further. Thanks.
Jeffry A. Spain
Network Administrator
Cincinnati Country Day School
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