arno-iptables-firewall 1.9.2.h-1 QoS script component has "Bad substitution" error with /bin/dash but not with /bin/bash

Binary package hint: arno-iptables-firewall

re: arno-iptables-firewall 1.9.2.h-1

arno-iptables-firewall has a script that implements QoS -- it is at /usr/share/arno-iptables-firewall/plugins/60traffic-shaper.plugin.

This script has an incompatibility with the default /bin/sh shell in Ubuntu (actually /bin/dash). An error “Bad substitution” is reported when the QoS script runs.

Test case:

vi /etc/arno-iptables-firewall/plugins/traffic-shaper.conf
change to ENABLED=1
/etc/init.d/arno-iptables-firewall restart or /etc/init.d/arno-iptables-firewall status

An error "Bad substitution" will be reported and the QoS script fails to run completely.

As a workaround, switch the arno script to use /bin/bash.

vi /usr/sbin/arno-iptables-firewall

change the first line to #!/bin/bash instead of calling /bin/sh

With this change, no error is reported and QoS is enabled as expected.

I also tried the Ubuntu 10.10 version but had the same behavior.

Thanks,
Tim Miller Dyck

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Description: Ubuntu 10.04.1 LTS
Release: 10.04

arno-iptables-firewall:
  Installed: 1.9.2.h-1
  Candidate: 1.9.2.h-1
  Version table:
 *** 1.9.2.h-1 0
        500 http://ca.archive.ubuntu.com/ubuntu/ lucid/universe Packages
        100 /var/lib/dpkg/status