IPV4 broadcast log messages (Syncthing) Correct !!??

[louis2]

I recently installed Syncthing which does result in a lot of broadcast messages in the log. I wonder if that is correct.

Syncthing is using Port 21027/UDP: for discovery broadcasts on IPv4 and multicasts on IPv6. My actual problem is related to IPV4

My local Syncthing client is sending every couple of seconds a broadcast to 192.168.abc.255:21027 Which is as far as I know a link local broadcast.

So the firewall should not pass or process it, I think ..

Each message is blocked by my generic logging rule at the end of each rule set and generates a log message (which does not exclude broadcasts).

For the moment I simply stopped this with placing a rule in front of the the rule above (see below), however is this behavoir correct? Question is more or less if 'a.b.b.255' a normal address or should it be threaded special.