Thank you for your help jggimi,
I already did this and from the sysctl.conf file (so from the boot), it was my fault to not tell it on my previous post, sorry.
If I do ifvonfig after vpnc get connected I see that:
Code:
tun0: flags=51<UP,POINTTOPOINT,RUNNING> mtu 1412
priority: 0
groups: tun
inet 192.168.20.75 --> 192.168.20.75 netmask 0xffffffff
And that's all, no packets received or transmitted (apparently), I also launched vpnc with Debug 99 option and I saw it is parsing all the packets that comes from the Cisco aggregator.
All sounds good, but once connected... nothing works