Firewall to block multicast

RouterOS General
1

Hi,

My goal is to block only particular multicast group 239.2.3.66 on interface Eth5. It is present on Eth5, when checking with torch (it shows src ip 239.2.3.66), it is also present in firewall connection list. So I’ve added new rule:

  0   chain=output action=drop src-address=239.2.3.66 out-interface=TVbox-eth5

But no luck, this multicast still passing firewall without problems. Tried different fw chains - no results.

Any ideas how to block only one multicast group?

RB951 / fw6.18

Regards,
Valentas