Solved HI TO YOU ALL!!! Eventually I find the way. I can login trought the ISPconfig interface!!! I'm not sure of the step but I only comment out the line in the /etc/hosts: Code: 127.0.0.1 localhost.localdomain localhost 192.168.100.1 server1.example.com server1 # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters ff02::3 ip6-allhosts ..and after the restarting of the network my eth0 was configured as IPv4 having the right IP address. (PS= I did it because in the perfect setup of Ubuntu 6.10 they said about that..) I hope this long post can help somebody else!!