On Wed, Feb 17, 2016 at 10:54:54AM +0900, Tuyosi Takesima wrote: > wifi router > 192.168.100.254 > | > |wireless > | > rum0:dhcpcd
This kind of bridge between two wireless devices requires support for the WDS ("wireless distribution system") extension for both the wifi router and rum0. https://en.wikipedia.org/wiki/Wireless_distribution_system This functionality is not part of standard 802.11. OpenBSD doesn't support WDS, so you're out of luck and your plan won't work like this. Sorry. If the wifi router supports WDS you could try to build a wireless bridge with some other device (e.g. some device running OpenWRT) and run a cable to your OpenBSD box from there.