jail: external and localhost distinction

[Andrew Snow]

Dmitry Morozovsky wrote:
> am I right concluding that under FreeBSD jail there is no way to attach two 
> processes to the same port of external interface address and localhost?
> 
> I tried to move rather standard two-tier nginx(ip:80)+apache(127.1:80) scheme 
> into a jail and on apache start got

In FreeBSD jails, the loopback interface doesn't exist - 127.0.0.1 is 
hardwired internally to point to the (external) jail IP.