This Application is mavlink protocol analyzer for Macintosh . Received UDP packets are displayed on the table. It will be publish at App Store in future. The beta test version is free . Try it !

Mavlink Analyzer
click by right mouse button to download.

version beta-0.0 on Nov.28.2018
update beta-0.1 Dec.5.2018
required osx 10.14 or later
licence free
suport none

If you need IP Packet Mirroring, see this page.