The problem I was to fix had been fixed by dlg@'s commit today.
https://marc.info/?l=openbsd-cvs=159538265604770=2
So the diff is not needed any more. Pointed out by dlg@.
Thanks,
On Wed, 22 Jul 2020 19:24:32 +0900 (JST)
YASUOKA Masahiko wrote:
> Hi,
>
> Currently when using the real mac address for carp(4) interface, all
> packets are treated as their receive inteface is carp. This causes
> some problems.
>
> For example, IPv6 ndp doesn't work on an interface which is used for
> carpdev. Because it is assumed that reply packets are received with
> the same interface which is used to send out the request.
>
> ok?
>
> When realmac is used for carp(4), don't pass the packets through the
> interface since they are for the real interface.
>
> Index: sys/netinet/ip_carp.c
> ===
> RCS file: /disk/cvs/openbsd/src/sys/netinet/ip_carp.c,v
> retrieving revision 1.345
> diff -u -p -r1.345 ip_carp.c
> --- sys/netinet/ip_carp.c 21 May 2020 05:24:59 - 1.345
> +++ sys/netinet/ip_carp.c 22 Jul 2020 09:52:20 -
> @@ -1418,6 +1418,14 @@ carp_input(struct ifnet *ifp0, struct mb
> }
> m_tag_prepend(m, mtag);
> }
> +
> + /*
> + * When carp is using realmac, since the matched MAC
> + * address is for the real interface, the packets are
> + * not for the carp interface.
> + */
> + if (sc->sc_realmac)
> + sc = NULL;
> break;
> }
> }
>
