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Check for IPV6_V6ONLY before using it

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This is necessary for supporting OmniOS (Solaris), which doesn't
actually document how to actually define this flag. This platform also
requires LDLIBS='-lsocket -lnsl' when compiling.
This commit is contained in:
Christopher Wellons 2019-02-03 15:25:25 -05:00
parent 2f418df897
commit 08a9dfe97e
1 changed files with 2 additions and 0 deletions
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endlessh.c
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@ -430,11 +430,13 @@ server_create(int port)
if (r == -1)
logmsg(LOG_DEBUG, "errno = %d, %s", errno, strerror(errno));
#if defined(IPV6_V6ONLY)
value = 0;
r = setsockopt(s, SOL_SOCKET, IPV6_V6ONLY, &value, sizeof(value));
logmsg(LOG_DEBUG, "setsockopt(IPV6_V6ONLY, false) = %d", r);
if (r == -1)
logmsg(LOG_DEBUG, "errno = %d, %s", errno, strerror(errno));
#endif /* IPV6_V6ONLY */
struct sockaddr_in6 addr = {
.sin6_family = AF_INET6,