Date: Thu, 26 May 2016 21:50:52 +0200 From: Niklaas Baudet von Gersdorff <stdin@niklaas.eu> To: freebsd-pf@freebsd.org Subject: Re: `echo <something> | pfctl -mf -` overriding instead of modifying Message-ID: <20160526195052.GI49239@box-fra-01.niklaas.eu> In-Reply-To: <b0d6b201-0bef-f1d8-b3d3-fd23e2c9a919@als.nnov.ru> References: <20160518072409.GD99839@box-fra-01.niklaas.eu> <20160526114645.GB49239@box-fra-01.niklaas.eu> <b0d6b201-0bef-f1d8-b3d3-fd23e2c9a919@als.nnov.ru>
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Max [2016-05-26 15:28 +0300] :
> Can you try something like
> exec.poststart = "/bin/sh /path/to/pf-config.sh $name $private_ip4
> $private_ip6"
>
> where pf-config.sh contains
> #!/bin/sh
> echo "rdr pass on vtnet0 inet proto { udp tcp } to vtnet0 port domain
> -> $2
> rdr pass on vtnet0 inet6 proto { udp tcp } to vtnet0 port domain ->
> $3" | pfctl -a "jails/$1" -Nf -
Thanks a lot for your input. I guess that would work but I managed to
solve it the following way:
exec.poststart += "echo 'rdr pass on vtnet0 inet6 proto { udp tcp } to vtnet0 port domain -> $private_ip6' | pfctl -a 'jails/$name-ipv6' -f -";
exec.poststart += "echo 'rdr pass on vtnet0 inet proto { udp tcp } to vtnet0 port domain -> $private_ip4' | pfctl -a 'jails/$name-ipv4' -f -";
exec.poststop += "pfctl -a jails/$name-ipv6 -F all";
exec.poststop += "pfctl -a jails/$name-ipv4 -F all";
The trick is to use two anchors. This way no rules are replaced and both
stay active.
Niklaas
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