From owner-freebsd-pf@FreeBSD.ORG  Wed Sep 16 16:28:35 2009
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Date: Wed, 16 Sep 2009 17:55:17 +0200
From: Frank Steinborn <steinex@nognu.de>
To: freebsd-pf@freebsd.org
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Subject: NAT traffic not seen on an interface
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Hi,

I have configured seven jails on the lo1 interface, NAT is configured
via pf, and all works fine. Now i configured an eight jail where i
need to measure the traffic going through this special jail, so I
configured it's IP on a dedicated lo2 interface. However, after some
testing (eg. watching 'systat if' and generating traffic on that jail)
I don't see the traffic at all. There actually is some traffic, but
it's definitely not all.

What am I missing? Is that approach reasonable at all?

Thanks!