Switching from wired to wireless getting "network down"

[John Baldwin]

On Tuesday 29 December 2009 4:29:23 pm martinko wrote:
> Sam Leffler wrote:
> >
> > r190526 makes it possible to do the wired/wireless failover in HEAD. The
> > only caveat is you must manually set the mac address of the wireless
> > device to match the wired device because lagg's automatic setting of the
> > wlanX ifnet doesn't propagate to the underlying device (the way
> > if_setlladdr works makes it difficult). In the mean time you can do:
> >
> > ifconfig ath0 ether 00:11:22:33:44:55
> >
> > where the mac address is whatever your wired nic's address is and then
> > setup lagg0 using the wlan; e.g.
> >
> > ifconfig ath0 ether 00:11:22:33:44:55
> > ifconfig wlan create wlandev ath0 ssid my_net up
> > ifconfig lagg create laggproto failover laggport em0 laggport wlan0 ...
> >
> > I also verified it works with WPA. In fact I tested this on a thinkpad
> > in a docking station and it did the right thing just un-docking and
> > re-docking. My only complaint is my ping running during all this lost
> > one packet in the transition; not sure where.
> >
> > Sam
> 
> Hallo,
> 
> I've tried to figure out how to make this persistant via rc.conf and I'm 
> running into a dependency issue -- lagg is created before wlan:
> 
> This is in my rc.conf:
> 
> ifconfig_sk0="up"
> ifconfig_iwi0="ether 00:11:22:33:44:55" # match wired (sk0)
> wlans_iwi0="wlan0"
> ifconfig_wlan0="wpa"
> 
> cloned_interfaces="lagg0"
> ifconfig_lagg0="laggproto failover laggport sk0 laggport wlan0 dhcp"
> 
> And this is the result of /etc/rc.d/netif restart :
> 
> Stopping Network: lo0 sk0 fwe0 fwip0 iwi0 wlan0.
> [...]
> ifconfig: interface wlan0 does not exist
> Starting wpa_supplicant.
> ifconfig: SIOCSLAGGPORT: Device busy
> Starting Network: lo0 sk0 iwi0 lagg0.
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>          options=3<RXCSUM,TXCSUM>
>          inet6 fe80::1%lo0 prefixlen 64 scopeid 0x5
>          inet6 ::1 prefixlen 128
>          inet 127.0.0.1 netmask 0xff000000
> sk0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>          options=b<RXCSUM,TXCSUM,VLAN_MTU>
>          ether 00:11:22:33:44:55
>          media: Ethernet autoselect (none)
>          status: no carrier
> iwi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 2290
>          ether 00:11:22:33:44:55
>          media: IEEE 802.11 Wireless Ethernet autoselect mode 11g
>          status: associated
> lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>          options=b<RXCSUM,TXCSUM,VLAN_MTU>
>          ether 00:11:22:33:44:55
>          media: Ethernet autoselect
>          status: no carrier
>          laggproto failover
>          laggport: sk0 flags=1<MASTER>
> 
> Please note that wlan0 is not part of lagg0 (!)
> If I create it from command line it works as described in previous email.
> It looks to me that wlan0 is not created fast enough and thus not added 
> to lagg0. :-/
> Any suggestions how to solve this please ?

Use an explicit 'network_interfaces' value in rc.conf that puts lagg0 last.

-- 
John Baldwin