Hello, after much testing and no solution I have a big problem, some time to configure zentyal you the option to connect other internal proxy network, the point is that now zentyal is my gateway but no way to remove Proxy Gateways Configuration - PROXY when I take it off and save me says Argument must be a IP address, try to remove it from
/usr/share/zentyal/stubs/network/99proxy.conf
/etc/apt/apt.conf.d/99proxy.conf
/etc/profile.d/network/zentyal-proxy.sh.mas
/etc/profile.d/zentyal-proxy.sh
I've tried almost everything but nothing