Date: Thu, 20 Aug 2009 07:14:34 -0500 From: Adam Vande More <amvandemore@gmail.com> To: Michal <ml@infosec.pl> Cc: freebsd-questions@freebsd.org Subject: Re: switching from one network interface to another without reboot Message-ID: <6201873e0908200514kcdf55d4r4ed645904f0f7170@mail.gmail.com> In-Reply-To: <4A8D329D.5030205@infosec.pl> References: <4A8D329D.5030205@infosec.pl>
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On Thu, Aug 20, 2009 at 6:25 AM, Michal <ml@infosec.pl> wrote: > Hello, > > 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: > ifconfig_em0="NOAUTO" > ifconfig_ath0="WPA DHCP" > 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. > Michal > -- > "The quiter you become, the more you can hear." -Ram Dass > > > /etc/rc.d/netif stop em0 /etc/rc.d/netif start ath0 -- Adam Vande More
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