man.postnix Miscellaneous man pages of Plan 9 related material

     ETHERMULTILINK(8)                               ETHERMULTILINK(8)

     NAME
          ethermultilink - switch between multiple interfaces on a
          bridge

     SYNOPSIS
          ethermultilink primary secondary [ secondary ]...  >
          /net/bridge0/ctl

     DESCRIPTION
          Ethermultilink takes a primary ethernet interface and a list
          of secondary interfaces in increasing priority order.  It
          checks the link status of the secondary interfaces and if
          any are link-active, bridges the primary and the highest
          priority secondary interface together by outputting
          bridge(4) commands on standard output.  The link status of
          all the secondary interfaces is checked once per second and
          the commands to change the active secondary are output as
          needed.

     EXAMPLE
          # make the bridge
          bind -a '#B' /net
          # mount the ethernet
          bind -a '#l0' /net
          # mount the wifi
          bind -a '#l1' /net
          # roam between wifi and ethernet
          ethermultilink /net/ether1 /net/ether0 > /net/bridge0/ctl
          # setup ip on the primary
          ip/ipconfig ether /net/ether1

     SOURCE
          /rc/bin/ethermultilink

     SEE ALSO
          bridge(3).

     Page 1                       Plan 9            (printed 10/30/25)