can't add interfaces to bridge

[Nikos Vassiliadis]

On Saturday 27 September 2008 20:52:43 Steve Franks wrote:
> I'm getting the following error - ifconfig: BRDGADD ath0: Invalid
> argument
>
> Given the following commands (which work for my tap interface with
> qemu on 7.1, but apparently not with two regular network cards on
> 6.3):
>
> sudo kldload if_bridge
> sudo ifconfig ath0 down
> sudo ifconfig rl0 down
> sudo ifconfig bridge0 destroy
> sudo ifconfig bridge0 create
> sudo ifconfig bridge0 addm ath0
> sudo ifconfig bridge0 addm rl0
> sudo ifconfig bridge0 up
> sudo ifconfig ath0 up
> sudo ifconfig rl0 up
> sudo dhclient bridge0
> ifconfig
>
> I get the following output:
>
> [steve at aire /usr/home/steve]$ bridge
> kldload: can't load if_bridge: File exists

> net.link.tap.user_open: 1 -> 1
> net.link.tap.devfs_cloning: 1 -> 1
> net.link.tap.up_on_open: 1 -> 1

I don't see any sysctl related commands in the script above.
?

> ifconfig: BRDGADD ath0: Invalid argument
> ifconfig: BRDGADD rl0: Invalid argument
> DHCPDISCOVER on bridge0 to 255.255.255.255 port 67 interval 8
> ath0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>         inet 192.168.2.69 netmask 0xffffff00 broadcast 192.168.2.255
>         ether 00:13:f7:4a:0f:a8
>         media: IEEE 802.11 Wireless Ethernet autoselect (DS/1Mbps)
>         status: no carrier
>         ssid "" channel 3
>         authmode OPEN privacy ON deftxkey 1 wepkey 1:104-bit txpowmax 39
>         bmiss 7 protmode CTS burst bintval 100
> rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>         options=8<VLAN_MTU>
>         inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
>         ether 00:01:6c:16:44:6f
>         media: Ethernet autoselect (none)
>         status: no carrier
> plip0: flags=108810<POINTOPOINT,SIMPLEX,MULTICAST,NEEDSGIANT> mtu 1500
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
>         inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
>         inet6 ::1 prefixlen 128
>         inet 127.0.0.1 netmask 0xff000000
> bridge0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
>         ether ea:57:36:3c:28:0c
>         priority 32768 hellotime 2 fwddelay 15 maxage 20
> [steve at aire /usr/home/steve]$

(I think that)
Your wireless card doesn't seem to be in AP mode and if_bridge
can only bridge 802.11 interfaces in AP mode with ethernet inter-
faces. Two things though:
1) I am not sure if it complains about it as it does above
   ifconfig: BRDGADD ath0: Invalid argument
2) I do not undestand why it complains about rl0.

What are you trying to achieve? Maybe there is some other way...

Nikos