It would be nice if it would be possible to define the src-addr/src-interface the fetch tool is using for the outgoing connection. We use a script with the fetch tool poll a our own ddns service. For routers with multiple WAN connections we would like to poll over each path.

This would be helpful. Same for package upgrade.

+1

this feature is overdue, not having interface and/or src-address for fetch is a nightmare for dyndns scripts