What have you done? Has systemd do evil again? Mar 12 21:27:37 ximing networking[3871]: Deconfiguring network interfaces...done. Mar 12 21:27:37 ximing networking[3890]: Configuring network interfaces...open: No such file or directory Mar 12 21:27:37 ximing networking[3890]: Failed to bring up br0. Mar 12 21:27:37 ximing networking[3890]: done. Mar 12 21:27:52 ximing networking[4099]: Deconfiguring network interfaces...done. Mar 12 21:27:53 ximing networking[4120]: Configuring network interfaces...open: No such file or directory Mar 12 21:27:53 ximing networking[4120]: Failed to bring up br0. Mar 12 21:27:53 ximing networking[4120]: done. Mar 12 21:28:53 ximing networking[4509]: Deconfiguring network interfaces...done. Mar 12 21:28:53 ximing networking[4529]: Configuring network interfaces...open: No such file or directory Mar 12 21:28:53 ximing networking[4529]: Failed to bring up br0. Mar 12 21:28:53 ximing networking[4529]: done.
Here is my /etc/network/interfaces: ################################# $ cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback iface eth0 inet manual auto br0 iface br0 inet static address 192.168.1.200 netmask 255.255.255.0 gateway 192.168.1.1 pre-up ip tuntap add dev tap0 mode tap user ximing pre-up ip link set tap0 up bridge_ports all tap0 bridge_stp off bridge_maxwait 0 bridge_fd 0 post-down ip link set tap0 down post-down ip tuntap del dev tap0 mode tap #################################### -- ======================================== best regards & a nice day Zhao Ximing