450M ntp port question

We have ntp servers that our 450M APs query for time.  A tcpdump on the ntp server is showing the source port from the AP udp request as 6969.  This port happens to be registered with IANA for the acmsoda, which is a bit torrent client.

https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=6969

Is there any reason the 450M ntp client uses port 6969?

This is probably not a really a big deal, but I came across it today and was curious about it.  I would generally think ntp clients would run from the private port range (49152-65535).

Edit 11/5

Also noticed today the NTP protocol version being sent from the Cambium AP is version 3.  Our Ciena and old Motorola 7181 devices are using NTP 4, so found that a bit interesting as well.

Thanks!