After 2 minutes udp traffice go down. Igmpproxy don't send igmp packet to upstream's server and it stop tranlation. Route in table save but no udp translation.
>>14:53:52.707338 IP myip > 239.0.1.1: igmp v2 report 239.0.1.1
>>14:53:59.187972 IP myip > 239.0.1.1: igmp v2 report 239.0.1.1
>>14:54:24.114355 IP 10.252.194.129 > ALL-SYSTEMS.MCAST.NET: igmp query v2
>>14:55:24.525287 IP 10.252.194.129 > ALL-SYSTEMS.MCAST.NET: igmp query v2
after about 20sec translation have stoped