Посмотрите лог роутера плз.
 

DIR-615 Hardware Version: E4 Firmware Version: 5.11RU
Nov 18 23:45:39 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.170
Nov 18 23:45:39 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.170 at port 0
Nov 18 23:45:38 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.170
Nov 18 23:45:38 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.170 at port 0
Nov 18 23:45:37 notice Note: The IGMP message was from myself. Ignoring.
Nov 18 23:45:37 notice Note: RECV V2 member report from 192.168.0.1 to 224.0.0.252 at port 0
Nov 18 23:45:37 info Info: ignoring unknown IGMP message type 11 from 192.168.0.1 to 224.0.0.1
Nov 18 23:45:37 notice Note: RECV Membership query from 192.168.0.1 to 224.0.0.1 at port 0
Nov 18 23:45:35 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.237
Nov 18 23:45:35 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.237 at port 0
Nov 18 23:45:34 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.237
Nov 18 23:45:34 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.237 at port 0
Nov 18 23:45:34 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.87
Nov 18 23:45:34 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.87 at port 0
Nov 18 23:45:33 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.87
Nov 18 23:45:33 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.87 at port 0
Nov 18 23:45:30 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.220.19
Nov 18 23:45:30 notice Note: RECV Membership query from 172.16.63.53 to 233.33.220.19 at port 0
Nov 18 23:45:29 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.220.19
Nov 18 23:45:29 notice Note: RECV Membership query from 172.16.63.53 to 233.33.220.19 at port 0
Nov 18 23:45:23 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.170
Nov 18 23:45:23 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.170 at port 0
Nov 18 23:45:22 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.170
Nov 18 23:45:22 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.170 at port 0
Nov 18 23:45:21 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.237
Nov 18 23:45:21 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.237 at port 0
Nov 18 23:45:20 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.237
Nov 18 23:45:20 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.237 at port 0
Nov 18 23:45:17 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.53
Nov 18 23:45:17 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.53 at port 0
Nov 18 23:45:17 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.237
Nov 18 23:45:17 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.237 at port 0
Nov 18 23:45:16 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.53
Nov 18 23:45:16 notice Note: RECV Membership query from 172.16.63.53 to 233.33.210.53 at port 0
Nov 18 23:45:15 info Info: ignoring unknown IGMP message type 11 from 172.16.63.53 to 233.33.210.237
и т.д и т.п много листов
Стоит пугаться и предпринимать, или можно плюнуть и забыть?
Спасибо.

проверяет подписку на мультикаст или пытается подписаться кто-то, пугаться нечему, надо просто слазить в вики и уточнить :) а дальше по обстоятельствам, если какой-нить [filolog]иптв[/filolog] мультикастами не гоняется, то просто вырубить нафиг игмп и мультикастовое добро, если можно, чтоб не мешалось.

а че это iptv русскими буквами фильтруется (

ну или как минимум из логов убрать, если не нужно, важное потом можно запросто не заметить :)

Спасибо успокоили.

ну почему нельзя успокаиваться самостоятельно?
например вырубив отладочные сообщения в журнале? которые какой-то хакер включил))