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Suggest solution to ENOMEM error with IPv6 multicast.

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This commit is contained in:
Simon Kelley
2015-08-26 22:38:08 +01:00
parent 5e3e464ac4
commit 9cdcfe9f19
1 changed files with 10 additions and 3 deletions
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13
src/network.c
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@@ -1076,23 +1076,30 @@ void join_multicast(int dienow)
if ((daemon->doing_dhcp6 || daemon->relay6) && if ((daemon->doing_dhcp6 || daemon->relay6) &&
setsockopt(daemon->dhcp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1) setsockopt(daemon->dhcp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
err = 1; err = errno;
inet_pton(AF_INET6, ALL_SERVERS, &mreq.ipv6mr_multiaddr); inet_pton(AF_INET6, ALL_SERVERS, &mreq.ipv6mr_multiaddr);
if (daemon->doing_dhcp6 && if (daemon->doing_dhcp6 &&
setsockopt(daemon->dhcp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1) setsockopt(daemon->dhcp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
err = 1; err = errno;
inet_pton(AF_INET6, ALL_ROUTERS, &mreq.ipv6mr_multiaddr); inet_pton(AF_INET6, ALL_ROUTERS, &mreq.ipv6mr_multiaddr);
if (daemon->doing_ra && if (daemon->doing_ra &&
setsockopt(daemon->icmp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1) setsockopt(daemon->icmp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
err = 1; err = errno;
if (err) if (err)
{ {
char *s = _("interface %s failed to join DHCPv6 multicast group: %s"); char *s = _("interface %s failed to join DHCPv6 multicast group: %s");
errno = err;
#ifdef HAVE_LINUX_NETWORK
if (errno == ENOMEM)
my_syslog(LOG_ERR, _("try increasing /proc/sys/net/core/optmem_max"));
#endif
if (dienow) if (dienow)
die(s, iface->name, EC_BADNET); die(s, iface->name, EC_BADNET);
else else