Network configuration with /etc/network/interfaces
When you use Debian Linux, you can administrate your network settings via /etc/network/interfaces.
Here’s a simple example to demonstrate syntax and parameters of the configuration file.
# loopback interface auto lo iface lo inet loopback # Interface eth0 gets its IP via DHCP auto eth0 iface eth0 inet dhcp# Static IP for eth1 auto eth1 iface eth1 inet static address 192.168.222.140 netmask 255.255.255.0 network 192.168.222.0 broadcast 192.168.222.255 # Default gateway not set, because eth0 gets it via DHCP # gateway 192.168.222.254 # Log status and set route for network 10.0.0.0, when Interface comes up up route add -net 10.0.0.0 netmask 255.255.0.0 gw 192.168.222.2 dev $IFACE up /usr/bin/logger -t network "Interface $IFACE came up" # Log status and delete route for network 10.0.0.0, when Interface goes down down route del -net 10.0.0.0 netmask 255.255.0.0 gw 192.168.222.2 dev $IFACE down /usr/bin/logger -t network "Interface $IFACE went down"
There is the start script /etc/rcS.d/S40networking, which is executing ifup -a.
So, all interfaces with the keyword auto will be brought up while boot time.