Flag icon for for reserved/private addresses

Networking
1

IPFire 2.25 151 displays reserved address connections with a grey+"?" flag for country.
To make truly unknown connections easier to spot, how about a dedicated flag for reserved connections?
A flag with an “R” for reserved or “P” for private for example.

+my @PRIVATE_NETWORKS = (
+       "10.0.0.0/8",
+       "172.16.0.0/12",
+       "192.168.0.0/16",
+       "100.64.0.0/10",
+);

Flag_R