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netbsd 4.0 iwi0 woes


My laptop, an IBM thinkpad x41, used to run -current from quite a way
before 4.0 was released, and I was reasonably content with it.  For some
foolish reason I thought "hey, you should upgrade to 4.0", and so I did.

I built a 4.0 kernel from the same kernel config file I used previously,
fetched the 4.0 binary sets from, rebooted the new kernel
into single user mode, extracted the binary sets, ran postinstall and
etcupgrade etc. and rebooted.

Everything seemed to go ok, only my wifi interface didn't work -- the
old iwi-firmware package appeared not to be compatible.  So I installed
iwi-firmware3.  And was able to get a DHCP lease from my wifi router.

Only... after a few seconds, the laptop would no longer be able to reach
the default gateway (or anything else).  Reliably, each time I restarted
networking, I would get a lease, be able to ping the gateway for about 3
seconds, and then the connection would drop.

Now for some odd reason I appear to have no problems staying connected
to my neighbors wifi router.  When connected there, ifconfig tells me

        media: IEEE802.11 autoselect (OFDM18)

but when connected to my own wifi router, it's

        media: IEEE802.11 autoselect (DS2)

Which aside from the the bssid channel used is the only difference.

So... how do I get my laptop to connect to my own wifi router?


P.S.: Another thing that got lost in the upgrade is the ability to wake
my laptop from sleep.  Though the wifi thing is the more important of
the two to fix right now...

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