@DanBlackaz yeah let it run for a while - if you were seeing them every 1 to 4 minutes and now have 10, yeah could be a indication its gone - but lets give it a day or so..
It could be some oddness with mptcp and or pd, not sure how deep pd has gotten into all the different 5g networks out there. Or even mptcp - but you tie those sorts of technologies along with anycast.. And yeah would expect some duplicate stuff to show up now and then for sure..
In the big picture some duplication isn't going to cause any issues, other than log spam.. But log spam is a real thing that can be problematic for sure. You fill your log with garbage its way harder to spot things that could be indications of real problems, etc
Why I don't log default deny, and only log common udp ports in for may wan blocks, etc.. Reduction of log spam.. I don't need to see some rando UDP port hitting my wan, or a bunch of FA or etc.. But I do want to see syn to my wan IP, and there are a lot of common UDP ports that could be of interest.. So that is what I log, specific UDP traffic I would want to see and any SYN traffic sent to my wan IP that is blocked..