From: Alexander Hall (alexanderbeard.se)
Date: Fri Jan 18 2008 - 07:29:01 CST

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Juan Miscaro wrote:
> Hi,
>
> I am using OpenBSD 4.2 as my WAP with a ral adapter. My wireless
> client is running Kubuntu.
>
> The server is running dnsmasq (DHCP/DNScaching) and everything works.
>
> However, after a while the connection breaks completely and the only
> thing that rectifies the situation is a reboot on the serverside.
>
> I thought this instability may be a simplex/duplex issue. Here is the
> ifconfig ouput for ral0:
>
> ral0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> lladdr 00:18:f8:28:b9:f4
> groups: wlan
> media: IEEE802.11 autoselect mode 11g hostap
> status: active
> ieee80211: nwid WIFILAN chan 11 bssid 00:18:f8:28:b9:f4 100dBm
> inet6 fe80::218:f8ff:fe28:b9f4%ral0 prefixlen 64 scopeid 0x1
> inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
>
> Can someone please advise on troubleshooting methods?

I have had similar issues with a ral device. If I recall correctly,

   $ sudo ifconfig down
   $ sudo ifconfig up

was enough to get it running again. I was thinking about insufficient
power supply (it is a soekris _with_internal_harddrive_ after all...),
but I have not investigated it further.

If the above works for you, you could, as a workaround, add a cron job
to do that every now and then, or script something up that does it if
some ping command fails or so.

/Alexander

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