RX IGMP_V2_MEMBERSHIP_REPORT warnings

Hi,

I have configured multicast routing on CRS326-24G-2S+RM in order to allow my Music player to access my DLNA server.
Everything’s working fine from a end user perspective. However I keep getting the following two warning messages in my logs.

RX IGMP_V2_MEMBERSHIP_REPORT from <music player IP> to 239.255.255.250 on vif <DLNA server vlan>: source must be directly connected
RX IGMP_V2_MEMBERSHIP_REPORT from <DLNA server IP> to 239.255.255.250 on vif <DLNA music player vlan>: source must be directly connected

I can’t find any relevant information about what could cause such warnings.
I found this about IGMP_V2_MEMBERSHIP_REPORT: https://www.oreilly.com/library/view/internet-core-protocols/1565925726/re39.html but I can’t link this to the warning…

  • Has anybody already encountered such warnings ?
  • What could cause them ?

Thank you in advance!