Hi, I'm currently experimenting to find a way to make my notebook always select the best network connection possible. The priority should be:
1. LAN 2. WLAN 3. PPP (UMTS, LTE, etc.) With LAN and WLAN alone I can use ifwatchd(8) calling scripts for carrier and no-carrier detected, as suggested on hubertf's blog: http://www.feyrer.de/NetBSD/bx/blosxom.cgi/nb_20070816_1133.html The following example works more or less. gem0 is my LAN, bwi0 my WLAN interface: ---8<--- #!/bin/sh case $0 in *-up) pkill dhclient case $1 in gem*) logger LAN detected: stopping wpa_supplicant /etc/rc.d/wpa_supplicant stop ;; esac /etc/rc.d/network restart /sbin/dhclient $1 ;; *-down) pkill -x ssh case $1 in gem*) logger LAN disconnected: starting wpa_supplicant /etc/rc.d/wpa_supplicant start ;; esac ;; *) logger "$0 $@": unknown ;; esac logger "$0 $@" done. ---8<--- With PPP as third option it is getting complicated. I have to make sure that "/etc/rc.d/ppp start" is executed when both, LAN and WLAN lost carrier. And "/etc/rc.d/ppp stop" must be run when one of LAN or WLAN is becoming available again. How to do that? Has anybody already worked out a good solution? -- Frank Wille
