Hi. On Thu, 06 Mar 2014 22:59:46 +0800 lina <lina.lastname@gmail.com> wrote: > Mar 6 10:47:05 debian NetworkManager[6729]: Error: Can't parse > interface line '#015' Weird, but explainable. You have this: > 7 iface eth0 inet dhcp And then you have this: > 13 iface eth0 inet dhcp /etc/network/interfaces should contain exactly one definition for a single network interface, you have two. Try commenting out lines 12 and 13. Reco