[OpenWrt Wiki] IPTV / UDP multicast
openwrt.org › guide-user › networkJan 18, 2019 · Instead the OpenWrt router must act as a router for multicast packets and igmpproxy does this by listening for and proxying the IGMP requests to the ISP as well, and then enabling forwarding of the UDP packets from WAN to LAN. OpenWrt has the package igmpproxy utility to do that.
[OpenWrt Wiki] IPv6 multicast
openwrt.org › docs › guide-userNov 15, 2021 · When testing multicast routing (e.g. with ping) ensure the TTL is set larger than one. By default all multicast packets have a TTL of 1 which means they will not be routed at all. The -t option for ping will do this, and other programs will have different options. ping-t 4 ff05:: 1