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From: "roland" <for_spam@gmx.de>
To: user-mode-linux-devel@lists.sourceforge.net
Cc: hno@marasystems.com, Jeff Dike <jdike@addtoit.com>
Subject: [uml-devel] [BUG?] - Network Problem - ifconfig eth0 up fails
Date: Fri, 28 May 2004 15:14:36 +0200	[thread overview]
Message-ID: <142701c444b5$ba3ee570$2000000a@schlepptopp> (raw)

hi !

if i do a 

ifconfig eth0 down
ifconfig eth0 up

inside uml, i get:

SIOCSIFFLAGS: Device or resource busy

and kernel log says:
TUNSETIFF failed, errno = 16 (16 is Device or ressource busy)

most of the time it seems to behave like this - but i`m sure that a was able to up/down 
the interface and didn`t get this error. i don`t know, under which circumstances this 
effect doesn`t happen.

i have 2.6.6-um/suse9.1 running on suse9.0/2.6.6-vanilla/skas
i`m using bridged networking (tuntap) with dedicated tap-device for each uml

seems to be a bug wich exists for some time:
http://marc.theaimsgroup.com/?l=user-mode-linux-user&w=2&r=1&s=TUNSETIFF+failed+16&q=b

any hints to dig into this further ?

stracing the ifconfig shows:
ioctl(4,0x8913,0xbffff540)    = 0
ioctl(4,0x8914,0xbffff540)    = -1 EBUSY (Device or resource busy)

regards
roland




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                 reply	other threads:[~2004-05-28 13:07 UTC|newest]

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