Ifpriority error message

[mjb]

Hi,

I'm setting up a Bridge and have selected "Enable spanning tree options for this bridge." (as I have a Master and Backup server and want to avoid an L2 loop). I've added WAN and LAN as the STP Interfaces and set the WAN Priority value as 80. However when I click Save the System Log shows the following error:

php: /interfaces_bridge_edit.php: The command '/sbin/ifconfig bridge0 ifpriority 80' returned exit code '1', the output was 'ifconfig: 'ifpriority' requires 2 arguments'

When I go back and take a look at the Bridge settings the Priority has not been saved. How do I fix this?