babeld: During intf startup, ignore address already in use

When listening on a multicast group.  No need to actually
fail the operation when it's already being used.

Let's not treat the Address already in use error message
as one that is stopping everything from working.  Especially
since multiple interface events cause this to happen.

Without this, if config is read in before full connection
to zebra, babel will never establish neighbors.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>
This commit is contained in:
Donald Sharp 2023-01-28 09:32:34 -05:00
parent 403081e12a
commit 6d078ff808
1 changed files with 9 additions and 9 deletions

View File

@ -632,15 +632,15 @@ interface_recalculate(struct interface *ifp)
rc = setsockopt(protocol_socket, IPPROTO_IPV6, IPV6_JOIN_GROUP,
(char*)&mreq, sizeof(mreq));
if(rc < 0) {
flog_err_sys(EC_LIB_SOCKET,
"setsockopt(IPV6_JOIN_GROUP) on interface '%s': %s",
ifp->name, safe_strerror(errno));
/* This is probably due to a missing link-local address,
so down this interface, and wait until the main loop
tries to up it again. */
interface_reset(ifp);
return -1;
if (rc < 0 && errno != EADDRINUSE) {
flog_err_sys(EC_LIB_SOCKET,
"setsockopt(IPV6_JOIN_GROUP) on interface '%s': %s",
ifp->name, safe_strerror(errno));
/* This is probably due to a missing link-local address,
so down this interface, and wait until the main loop
tries to up it again. */
interface_reset(ifp);
return -1;
}
set_timeout(&babel_ifp->hello_timeout, babel_ifp->hello_interval);