wildcard for local-policy next-hop?

I haven't seen such as thing in any of my training, documentation, or the BCP guides as using a wildcard (*) for a next-hop. However, it is in Metaswitch's BCP recommendations for access/peering hybrid environment. My searches don't seem to be getting my anywhere for once. Can someone point me to a souce describing how this functions? Does it just use whatever sip-port is used on that particular realm? Which sip-port is used if there are multiple?

 

Here's an example:

 

local-policy
        from-address
                                       *
        to-address
                                       *
        source-realm
                                       core
        description
        activate-time                  N/A
        deactivate-time                N/A
        state                          enabled
        policy-priority                none
        last-modified-by               admin@192.168.22.31
        last-modified-date             2012-08-09 19:52:20