[OpenWrt Wiki] IPTV / UDP multicast
openwrt.org › docs › guide-userJan 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.