DragonFly BSD
DragonFly bugs List (threaded) for 2005-02
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Re: Network problems

From: Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>
Date: Thu, 3 Feb 2005 10:33:27 -0800 (PST)

:this started with an upgrade about 1-2 weeks ago (well, it started with 
:*something* that happened 1-2 weeks ago). Network (packet forwarding?) 
:stalled every 6-12 hours. Today I did another upgrade (no configuration 
:changes) and now it happens every 30-90 minutes.
:This box is my router connected to the net by an rl interface (via 
:pppoe) and connected to the internal network by an sis.
:When it hangs I can do:
:# [kill ppp]
:# ifconfig tun0 down
:# ifconfig tun0 up
:# [start ppp]
:Then I get a:
:Working in ddial mode
:Error: bundle_Create: ioctl(TUNSIFMODE): Device busy
:Using interface: tun0
:After which everything works normal again. If I leave out the down/up of 
:tun0 I won't get an error from ppp but it will use tun1 instead which 
:doesn't work.
:I could provide tcpdump output for both interfaces if there's interest.

    This seems eerily familiar.  I seem to remember we had a similar
    problem with the tun interface a while ago.

    Try to narrow down the date at which it stopped working by downloading
    snapshot kernels (assuming you don't have to load any modules to test
    the issue).

					Matthew Dillon 

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