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Date: Sun, 31 Mar 1996 12:41:32 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199603310241.MAA06465@godzilla.zeta.org.au>
To: bde@zeta.org.au, freebsd-hackers@wcarchive.cdrom.com,
        ponds!rivers@dg-rtp.dg.com
Subject: Re: SIO lock-ups..
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>...
> Until I applied the spl.h fix for getting a better SWI_TTY_MASK,
>I couldn't do anything after sio locked up except reboot (even
>with drainwait set to 1.)  After the fix, I can kill the process;
>after a second - it actually dies  (that's a big improvement, but
>I'd still like to receive the data :-) )
>...
>  Bruce - do you have any ideas?

SWI_TTY_MASK is missing SWI_NET_MASK in 2.1.  This only matters for
ppp IIRC.

ixoff is broken in 2.1.

Bruce