How do I restart networking service under OpenBSD operating system from a shell prompt? How do I start / stop interface on a OpenBSD?

You need to use the /etc/netstart command scripts for network startup. It is the command script that is invoked by rc during an automatic reboot and after single user mode is exited; it performs network initialization including routing. If you made changes to interface called pnc0 by editing /etc/hostname.pnc0, type the following command to restart / reset / update TCP/IP configuration including routing table and set up the default routes:
# sh /etc/netstart pnc0
OR use doas command to run root level tasks:
$ doas -u root sh /etc/netstart pnc0
Mark an interface down i.e. stop networking service and transmission via interface called vio1:
# ifconfig vio1 down
To bring back interface, type:
# ifconfig vio1 up

Adblock detected 😱

My website is made possible by displaying online advertisements to my visitors. I get it! Ads are annoying but they help keep this website running. It is hard to keep the site running and producing new content when so many people block ads. Please consider donating money to the nixCraft via PayPal/Bitcoin, or become a supporter using Patreon.

Advertisements

To restart all interfaces:

$ doas -u root sh /etc/netstart
If your interface name is vio0, config file is /etc/hostname.vio0:
$ cat /etc/hostname.vio0

To see your default gateway, enter:

$ cat /etc/mygate

To see your hostname, enter:

$ cat /etc/myname

To see your DNS server IP address, enter:

$ cat /etc/resolv.conf

To see your routing table:

$ route show
$ netstat -r
$ netstat -r -n
$ netstat -r -f inet -n ## only IPv4 ##
Sample outputs:

References

• man 8 netstart

ADVERTISEMENTS