[aprssig] Digi Deduplication Behavior

[Kenneth Finnegan]

> A bigger problem with doing anything with destination IDs is that the Mic-E
> compressed position format puts the latitude value here.    Any moving
> station with a north-south vector in it's velocity shows a
> constantly-changing value in the destination field.  Note that the Mic-E
> format is used exclusively by all Kenwood and Yaesu APRS radios, and is a
> default option on TinyTracks; i.e. very widely used by mobiles.

If Mic-E is putting posit data in the dest SSID, it sounds like it
should be part of the dup check.

Sounds like it should be: dup check on AT LEAST the information field
and NEVER the routing path?