Re: Sending IPv6 packets via an interface even when NDP is not available

On 25/5/20 15:05, Demi M. Obenour wrote:
> How can I force all IPv6 packets sent via a certain route to:
>
> - Be directed out of a certain interface
> - Sent to a certain MAC address
> - Regardless of whether NDP works?
>
> I don't know the peer's IPv6 address, but I do know the interface
> and MAC address.

Insert a route that points to a "fake router" (with the "fake router"
being a fake link-local address). And also insert a static entry in the
Neighbor Cache, where the "fake router" is mapped to the MAC address
that you know.

(which address you pick for the fake router is rather irrelevant, as
long as it's not in use. So something along the lines of
fe80::0123:4567:890a:bcde will probably work fine).

(and appologies for the timing :-) )

Thanks,
--
Fernando Gont
e-mail: fernando@gont.com.ar || fgont@si6networks.com
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1