Capturing external packets sent to loopback (FreeBSD) ?

[Ray Bellis via tcpdump-workers <tcpdump-workers () lists tcpdump org>]

> --- Begin Message ---
>
>
> From: Ray Bellis <ray () bellis me uk>
>
> Date: Mon, 24 Feb 2020 14:16:30 +0000
>
> I've got a daemon that listens on a virtual IP address, that is itself
> attached to a cloned loopback interface on FreeBSD.
>
> Packets for that daemon could be arriving from multiple physical
> interfaces, and that's what's taxing me just now.
>
> I would -really- like to be able to process those packets without
> needing a per-interface thread or process (or other code changes) but it
> seems FreeBSD (and Linux FWIW) will only capture packets on that
> loopback IP that also -originated- on the loopback.
>
> Does anyone know of any magic trick I can invoke that'll reveal those
> packets?
>
> cheers,
>
> Ray
>
> --- End Message ---
_______________________________________________
tcpdump-workers mailing list
tcpdump-workers () lists tcpdump org
https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers