switching from one network interface to another without reboot
ml at infosec.pl
Thu Aug 20 10:52:47 UTC 2009
How can I switch from one network interface to another without rebooting
my system (7.2R)?
Problem description: I've got a laptop with two network interfaces
(wired em0 and wireless ath0). Every now and then I have to set up a DSL
wireless box which comes with default settings so that I have to start
with connecting my laptop via em0.
em0 gets IP address from wireless box by DHCP. I log in to web interface
and set everything up including WLAN and restart wireless box. At this
point I would like to switch to ath0 and start using internet connection
via wireless box.
I'm taking em0 interface down with "ifconfig em0 down" and unplug the cable.
I'm changing /etc/rc.conf entries to:
Then I'm doing "/etc/rc.d/netif restart" and ath0 gets IP address via
DHCP and is connected to wireless box (/etc/wpa_supplicant.conf is set up).
But whenever I try to ping anything (including wireless box) I get
"interface down" message because my system still tries to use em0.
What else should I do to tell it that I'm connected to network via ath0 now?
Any suggestions are welcome.
"The quiter you become, the more you can hear." -Ram Dass
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