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Date: Thu, 2 May 2013 02:30:19 +1000 (EST)
From: Ian Smith <smithi@nimnet.asn.au>
To: Joe <fbsd8@a1poweruser.com>
Subject: Re: vnet jail with ipfw having logging problem
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On Tue, 30 Apr 2013 20:16:59 -0400, Joe wrote:
 > I have ipfw running inside of a vnet jail on a 9.1-RELEASE host using the
 > jail(8) definition statements for starting and stopping the vnet jail. As a
 > side note non-vnet jails are working as expected.
 > 
 > The host is running a custom kernel with modules and with
 > options VIMAGE
 > nooptions SCTP
 > options IPFIREWALL
 > options IPFIREWALL_VERBOSE
 > options IPFIREWALL_VERBOSE_LIMIT=10

What steps have you taken during testing to override this ridiculously 
low limit on logging?  Otherwise, after e.g. just 5 pings and 5 ping 
responses are logged, all logging ceases until issuing 'ipfw resetlog'.

 > options IPFIREWALL_DEFAULT_TO_ACCEPT
 > options IPFIREWALL_IPDIVERT

You'd likely do better using in-kernel NAT; natd doesn't get much love.

 > options IPFIREWALL_FORWARD
 > 
 > compiled in.

Ian