[Nut-upsuser] NUT fails on openSUSE 11.3 if IPv6 turned off

[Roger Price]

Dear List, I'm running NUT 2.4.1 on openSUSE 11.3 64 bits, kernel
2.6.34.  The UPS is an Eaton Ellipse ASR 1500 USBS.  With driver
usbhid-ups NUT works perfectly _until_ I turn off IPv6.

By default IPv6 is turned on in openSUSE 11.3.  I visited YaST ->
Network Settings -> Global options and deselected "Enable IPv6".  I
then restarted the box.  When I entered the command "rcupsd start" to
start NUT, I received the reply:

Starting NUT UPS drivers ....done
Starting NUT UPS server startproc:  exit status of parent of /usr/sbin/upsd: 1
....failed

File /var/log/messages tails with

Nov  7 09:53:57 glacon usbhid-ups[4974]: Startup successful
Nov  7 09:53:57 glacon upsd[4977]: listening on 127.0.0.1 port 3493
Nov  7 09:53:57 glacon upsd[4977]: not listening on ::1 port 3493
Nov  7 09:53:59 glacon usbhid-ups[4974]: Signal 15: exiting

The fix for this problem is to turn IPv6 on again, but I wondered if
there was a way of specifying to NUT "no IPv6".

By the way, why is NUT sensitive to IPv6 operation?

Roger