‎Noisy line – UV Realtime pics | AT&T Community Forums

Your computers can now see the necessary multicast report packets that the STBs sent out, yet no IPTV stream comes to the NetGear switch or the D-Link thanks to IGMP snooping on the 2Wire. To make sure this works right, it’s imperative that the RG’s LAN is a different IP subnet than your D-Link’s LAN.

https://forums.att.com/conversations/att-internet-equipment/noisy-line-uv-realtime-pics/5deff59dbad5f2f60670bd14