kernel 2.6 and /etc/network/interfaces problem

[Andreas Sachs <andilist@gmx.de>]

Hello,
after upgrading from kernel 2.4 to 2.6 (2.6.8 sarge and 2.6.15 etch) i have a problem with virtual interfaces (e.g. eth0:1) in /etc/network/interfaces with mapping-scripts.

When i define 2 virtual interfaces the first run of ifup -a stopps directly after calling the mapping-script for the first interface(the interface is not up). Running ifup -a the second time the first interface will be up, but it stopps directly after calling the mapping script for the second interface. and so on

Example:
Interfaces (eth0, eth1, eth0:1, eth0:2) 
auto eth0 
... 
auto eth1 
... 
auto eth0:1 
mapping eth0:1 
        script /config/bin/get-config 
        map fw1 eth0:1-fw1 
        map fw2 eth0:1-fw2 


iface eth0:1-fw1 inet static 
        address 192.168.26.1 
        netmask 255.255.255.0 


iface eth0:1-fw2 inet static 
        address 192.168.26.2 
        netmask 255.255.255.0 


auto eth0:2 
mapping eth0:2 
        script /config/bin/get-config 
        map fw1 eth0:2-fw1 
        map fw2 eth0:2-fw2 


iface eth0:2-fw1 inet static 
        address 172.20.1.2 
        netmask 255.255.0.0 


iface eth0:2-fw2 inet static 
        address 172.20.1.3 
        netmask 255.255.0.0 
... 


Calling ifup -a the first time, the script is envoked for  eth0, eth1 und eth0:1. ifup stopps directly after calling the script for eth0:1.

Second run:
fw2:~# ifup -a -v 
Running mapping script /config/bin/get-config on eth0:1 
Configuring interface eth0:1=eth0:1-fw2 (inet) 
run-parts --verbose /etc/network/if-pre-up.d 


ifconfig eth0:1 192.168.26.2 netmask 255.255.255.0              up 


run-parts --verbose /etc/network/if-up.d 
run-parts: executing /etc/network/if-up.d/mountnfs 
run-parts: executing /etc/network/if-up.d/ntpdate 
run-parts: executing /etc/network/if-up.d/openvpn 
run-parts: executing /etc/network/if-up.d/sendmail 
Running mapping script /config/bin/get-config on eth0:2    <-  why does ifup stopps?
fw2:~# 


Third run:
fw2:~# ifup -a -v 
Running mapping script /config/bin/get-config on eth0:2 
Configuring interface eth0:2=eth0:2-fw2 (inet) 
run-parts --verbose /etc/network/if-pre-up.d 


ifconfig eth0:2 172.20.1.3 netmask 255.255.0.0 broadcast 172.20.255.255                 up 


run-parts --verbose /etc/network/if-up.d 
run-parts: executing /etc/network/if-up.d/mountnfs 
run-parts: executing /etc/network/if-up.d/ntpdate 
run-parts: executing /etc/network/if-up.d/openvpn 
run-parts: executing /etc/network/if-up.d/sendmail 
fw2:~# 

The mapping script returns a constand value (for test).

How can i use a mapping script with kernel 2.6 and virtual interfaces?

Thanks 
Andreas