[Bug 234021] 12.0 gateway host with vnet jail running pf firewall & NAT has no internet access

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234021

--- Comment #3 from Kristof Provost <kp at freebsd.org> ---
Vnet jails do indeed have their own network stack. As such you'd expect a NAT
jail to have the WAN interface and IP address assigned to it. After all, how
can a machine (i.e. the jail) perform the NAT role if it doesn't have a WAN and
LAN interface?

Your bug report shows that's not the case:

The host has the WAN IP (65.xxx.62.234 and interface vge0). The jail has a
private IP (10.0.110.25 and an epair epair15b). 

Note also that you can assign any interface into a vnet jail, not just epairs.

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