Network script is invoked twice - in parallel!

[Sven Köhler <sven.koehler@xxxxxxxxx>]

Hi all,

I observe that my networking script is invoked twice - in parallel! - 
when I execute "xl create ..." or reboot a domU.
I added the following the beginning/end of my script:

> echo "$$ ${command} ${dev} ${ip} | $@" >>/tmp/xen.log
> ...
> echo "$$ done" >>/tmp/xen.log

The output is:

> 1575914 online vif34.0 195.x.x.x 2a01:x:x:x:x::2/66 | online type_if=vif
> 1575916 online vif34.0 195.x.x.x 2a01:x:x:x:x::2/66 | online type_if=vif
> 1575914 done
> 1575916 done

I am using Xen 4.17.1.

How can I prevent that from happening? The script fails randomly since 
it is executed in parallel twice!
I would expect that the script is executed once only.


Kind Regards,
  Sven