IGMP crashes at semi-regular interval

[courtalj]

I've got pfSense working with IPTV using IGMP proxy. The IGMP keeps "crashing" at a somewhat regular interval of ~18 days. There are no other symptoms beyond the log messages below which may or may not be an actual problem - the IPTV simply stops working. If I go into the IGMP Proxy service and make any change at all and save, it comes back no problem, presumably because it restarts the service.

Here are the dates it has crashed:
12/31/2021
1/18/2022
2/6/2022
2/22/2022
3/18/2022

Here are the log messages (System -> Routing). I see one of the first, and many of the second:

Mar 18 01:08:53 	igmpproxy 	65313 	Sender VIF was down.; Errno(50): Network is down

Mar 18 01:08:38 	igmpproxy 	65313 	can't join group 239.9.30.4 on interface igb0; Errno(48): Address already in use 

Any insight into these log messages would be appreciated, and any thoughts on the nature of the crashes, workarounds, or notes if this is thought to be a bug. Thanks!