Re: [uml-devel] Strange behaviour in eth assignments

[Blaisorblade <blaisorblade@yahoo.it>]

On Saturday 19 August 2006 18:38, Peter Hovorka wrote:
> Hi,
>
> > > ./um2.6.16.27-bb1 ubd0=root_fs ubd1=swap_fs eth0=tuntap,tap112
> >
> > Do you really mean "tap112"?
>
> Yes, Sir.
I didn't want to be rude, sorry.

> > Nobody I think tried this. > I've checked
> > for bugs in parsing, but there is none. Please give more details and
> > try a saner setting, or elaborate on the reason of this strange
> > setting. At least let's determine if changing it causes the bug not
> > to show up.
>
> I've used taps according to the used IP in a range of 1-254 since 2002 -
> and I've never experienced any problems in doing so. So tap112 is quite
> a sane setting - for me at least it is.

I was just surprised, and one of my thoughts was "it is barfing on 112 because 
maybe the code is stupid and expects 1 digit". So I asked just to make sure.

The other was "why is he doing this? Does he need? Probably yes, I won't take 
that for granted and instead I'll ask him".

> > The other possibility is that something in the guest image (I'm not
> > talking about the kernel, but about the rootfs) is calling ifrename.
> > But since some kernels don't do that, this is probably not the case.

> I have tried this with three more or less different file systems after
> your mail to the list (and I should have done earlier - only thing I
> hadn't thought of), as there are:

> - Ubuntu Server 6.0.6 LTS
> - Fedora Core 5
> - Debian Sarge

> The problem seems to be Ubuntu - FC5 and Debian Sarge do well.
> No 
> problems with them. I would like to use Ubuntu, though - so it would be
> nice to have a workaround or at least the cause for this to happen.

About Ubuntu, make sure ifrename is not installed and /etc/network/if-* 
and /etc/rc2.d do not mention ifrename, and that ifrename is not installed.
I can only think that some hotplug script is receiving an event through 
sysfs / hotplug / some such hell and is renaming the interface.

Bye
-- 
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade
http://www.user-mode-linux.org/~blaisorblade
Chiacchiera con i tuoi amici in tempo reale! 
 http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com 


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