Re: networking stop hangs trying to contact portmapper
Hi,
just in case anyone is interested: the workaround for
the problem is not to shutdown the loopback interface
at all. I did that by removing its configuration from
/etc/network/interfaces and installing a Debian 2.0
style /etc/init.d/network script as
/etc/rcS.d/S40network.
This scripts currently contains:
ifconfig lo 127.0.0.1
route add -net 127.0.0.0 netmask 255.0.0.0 lo
Using "ifup lo" instead would probably work if I
had removed only the line with "auto lo" and not
also the "iface lo inet loopback".
Are there any drawbacks in not shutting down
the loopback interface?
On Tue, 2001-12-18 at 14:11, Patrick Ohly wrote:
> Hi,
>
> I am observing problems shutting down networking
> on two recently installed Debian/Woody systems:
> a reboot command first stops the portmapper,
> then tries to stop networking and just hangs
> indefinitely.
>
> When trying to debug the problem I tried
> "/etc/init.d/networking stop",
> "ifdown eth0" and finally
> "strace -f ifdown eth0" and found that it
> repeatedly sends data to port 111 on 127.0.0.1
> via sendto(). Aborting with CTRL-C is possible.
>
> Is this the correct behaviour? The portmapper
> has been stopped already, which (as far as I
> can tell) is correct.
>
> However, starting portmapper and networking
> seems to be done in different orders, depending
> on the initial run level. Or am I reading /etc/rc?.d
> incorrectly:
>
> $ ls /etc/rc?.d/*networking* /etc/rc?.d/*portmap*
> /etc/rc0.d/S10portmap
> /etc/rc0.d/S35networking
> /etc/rcS.d/S40networking
> /etc/rcS.d/S41portmap
> /etc/rc6.d/S10portmap
> /etc/rc6.d/S35networking
>
> Both machines have a pretty ordinary
> /etc/networking/interfaces:
>
> auto lo
> iface lo inet loopback
> auto eth0
> iface eth0 inet static
> address <..>
> netmask <..>
> gateway <..>
>
> One machine runs kernel 2.4.16 (as it doesn't work
> with 2.2.x), the other can use both, but I think
> the problem was independent of the kernel version.
>
> Any idea? I don't know if this is a configuration
> problem, a bug, and (if it is a bug) in which package.
>
> --
> Freundliche Gruesse / Best Regards
>
> Patrick Ohly
> Software Engineer
> --------------------------------------------------------------------
> //// pallas
> Pallas GmbH / Hermuelheimer Str. 10 / 50321 Bruehl / Germany
> Patrick.Ohly@pallas.com / www.pallas.com
> Tel +49-2232-1896-30 / Fax +49-2232-1896-29
> --------------------------------------------------------------------
>
>
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--
Freundliche Gruesse / Best Regards
Patrick Ohly
Software Engineer
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//// pallas
Pallas GmbH / Hermuelheimer Str. 10 / 50321 Bruehl / Germany
Patrick.Ohly@pallas.com / www.pallas.com
Tel +49-2232-1896-30 / Fax +49-2232-1896-29
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