Normally when jails are added their IPs are created as "normal"
aliases, so they'll get a /32 netmask when you don't specify.  So
Depending on how you're creating the jail you'll need to specify the
netmask with the IP wherever you configure your jail.  (You didn't
mention if you're using ezjail or not for example....)

On Mon, Aug 24, 2015 at 2:24 PM, Frank de Bot (lists) <li...@searchy.net> wrote:
> Hello,
>
> I'm trying to have jail with a public and a private IP address.  Both
> are on the same interface. The public is called 79.x.x.213 and private
> 10.4.3.6
> Out from ifconfig within the jail is:
>
>         inet 79.x.x.213 netmask 0xffffffff broadcast 79.x.x.213
>         inet 10.4.3.6 netmask 0xffffffff broadcast 10.4.3.6
>
> When I try to reach a host on the 10.4.3.0/24 network, it will use the
> source address 79.x.x.123 (seen with tcpdump)
> When done outside of the jail on the server, it does have the right
> source address.
> How can I get my jail to have the right source address? Some tools
> provide a way to define a source address, like telnet -s,  but it's not
> workable.
>
>
> Frank de Bot
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-- 

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into trouble of all kinds."
-- Samuel Butler
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