From: Nix <nix@esperi.org.uk>
To: roland <for_spam@gmx.de>
Cc: Naomi Fox <schpoo@Dartmouth.EDU>,
user-mode-linux-user@lists.sourceforge.net,
user-mode-linux-devel@lists.sourceforge.net
Subject: [uml-devel] Re: [BUG!?] Re: [uml-user] TUNSETIFF failed, errno = 16SIOCSIFFLAGS: Device or resource busy
Date: Wed, 16 Jun 2004 22:59:23 +0100 [thread overview]
Message-ID: <87oenjb1vo.fsf@amaterasu.srvr.nix> (raw)
In-Reply-To: <25d101c453c1$9978f090$2000000a@schlepptopp> (roland's message of "Wed, 16 Jun 2004 18:47:17 +0200")
On Wed, 16 Jun 2004, roland stipulated:
> hi!
>
>> > When I start up my UML, the networking works fine. If I bring down my
>> > interface and attempt to bring it back up again, I get the following
>> > message.
>> >
>> > # ifconfig eth0 down
>> > # ifconfig eth0 up
>> > TUNSETIFF failed, errno = 16SIOCSIFFLAGS: Device or resource busy
>
>> ... which it is: it's a component of the bridge, and doesn't have its
>> own independent existence anymore.
>
> yes - and that is why we should somewhat call it a "bug" - because a
> uml user indeed is allowed to bring down/up eth0, but he (usually)
> isn't allowed to do something outside the uml.
This is just the analogue of the way in which taking a link down from
one end will automatically take it down at the other end, too.
>> Either bring down br0, or bring down the UML side of the link.
>> that is a workaround , not a solution.
> i think UML needs some fix to handle tun/tap via bridge appropriately.
Er, it works now. :)
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prev parent reply other threads:[~2004-06-16 21:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20040615113816.02b911c5.schpoo@dartmouth.edu>
[not found] ` <87zn73biui.fsf@amaterasu.srvr.nix>
2004-06-16 16:47 ` [uml-devel] [BUG!?] Re: [uml-user] TUNSETIFF failed, errno = 16SIOCSIFFLAGS: Device or resource busy roland
2004-06-16 21:59 ` Nix [this message]
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