Hi,
in OpenBSD 5.6 NOINET6 gets disabled on a carp interface after configuring
an ipv6 address. Additionally you have to disable NOINET6 at the physical
interface or ip6_output() will fail because carp_send_ad() could not determine
an ipv6 source address via ifaof_ifpforaddr().
The attached patch enables IPv6 also at the carp parent interface if enabling
it at a carp interface.
Are there other interfaces which have the same problem?
Regards
Florian
Index: net/if.c
===================================================================
RCS file: /cvs/src/sys/net/if.c,v
retrieving revision 1.304
diff -u -p -r1.304 if.c
--- net/if.c 23 Nov 2014 07:39:02 -0000 1.304
+++ net/if.c 28 Nov 2014 19:39:58 -0000
@@ -1323,6 +1323,18 @@ ifioctl(struct socket *so, u_long cmd, c
if (ifp->if_xflags & IFXF_NOINET6 &&
!(ifr->ifr_flags & IFXF_NOINET6)) {
ifp->if_xflags &= ~IFXF_NOINET6;
+#if NCARP > 0
+ /* also enable ipv6 on carp parent interface */
+ if (ifp->if_type == IFT_CARP && ifp->if_carpdev &&
+ ifp->if_carpdev->if_xflags & IFXF_NOINET6) {
+ ifp->if_carpdev->if_xflags &= ~IFXF_NOINET6;
+ if (ifp->if_carpdev->if_flags & IFF_UP) {
+ s = splnet();
+ in6_if_up(ifp->if_carpdev);
+ splx(s);
+ }
+ }
+#endif
if (ifp->if_flags & IFF_UP) {
/* configure link-local address */
s = splnet();
