Adding static IPv4 in FreeBSD

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This is a quick how-to guide on adding to FreeBSD machine.

Set permanent IP

  • Open /etc/rc.conf
vi /etc/rc.conf
  • Search for ifconfig_xn0 (xn0 is interface name) and edit its contents to reflect your IP.
hostname="freebsd"
ifconfig_xn0="inet 192.168.10.1 netmask 255.255.250.0"
  • Run the /etc/netstart script to update configuration.
./etc/netstart

Set temporary IP

NOTE: IP will be reverted after reboot.

  • Get the interface name using ifconfig -a (you don’t want lo interface)
$ ifconfig -a
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
     ...
xn0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
     ...
  • Set the ip for xn0 using following command.
$ ifconfig xn0 inet 192.168.10.1