I manage to fix this problem with information from this bug #530024 eth0 Wired interface not managed (on squeeze install/upgrade). I modify /etc/NetworkManager/nm-system-settings.conf to [ifupdown] managed=true
I do not know if this the right solution but it works for me. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org