Which maps to
0012f1e8 T dev_open
---> 0012f23c T dev_close <----
0012f2fc T register_netdevice_notifier
My setup is a standard 1.3.22 kernel, with 2 dummy devices (the second one
added by editting Space.c), SLIP, PPP and loopback.
I've dropped back to 1.3.21 and everything is okay again.