tcpdump mailing list archives
Capturing external packets sent to loopback (FreeBSD) ?
From: Ray Bellis via tcpdump-workers <tcpdump-workers () lists tcpdump org>
Date: Mon, 24 Feb 2020 09:15:41 -0500 (EST)
--- 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 ---
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Current thread:
- Capturing external packets sent to loopback (FreeBSD) ? Ray Bellis via tcpdump-workers (Feb 24)
- Message not available
- Re: Capturing external packets sent to loopback (FreeBSD) ? Ray Bellis via tcpdump-workers (Feb 24)
- Re: Capturing external packets sent to loopback (FreeBSD) ? Guy Harris via tcpdump-workers (Feb 24)
- Re: Capturing external packets sent to loopback (FreeBSD) ? Ray Bellis via tcpdump-workers (Feb 24)
- Message not available
- Message not available
- Re: Capturing external packets sent to loopback (FreeBSD) ? Ray Bellis via tcpdump-workers (Feb 24)
- Re: Capturing external packets sent to loopback (FreeBSD) ? Guy Harris via tcpdump-workers (Feb 24)