广东东莞电信 ，调试了好久，FCC成功率很低，不知道是什么原因！ #270
Description
`17:00:10 INFO [Worker 0] New client 192.168.88.108:7080 requested URL: /%E5%B9%BF%E4%B8%9C%E7%94%B5%E8%A7%86%E5%8F%B0/%E5%B9%BF%E4%B8%9C%E5%8D%AB%E8%A7%86 (method: GET)
17:00:10 INFO [Worker 0] Service matched: 广东电视台/广东卫视
17:00:10 INFO [Worker 0] FCC: Using Telecom/ZTE/Fiberhome FCC protocol
17:00:10 DEBUG [Worker 0] FCC: Initializing FCC session and sending request
17:00:10 DEBUG [Worker 0] FCC: Bound client socket to port 40077
17:00:10 DEBUG [Worker 0] FCC: Socket registered with epoll
17:00:10 DEBUG [Worker 0] FCC (Telecom): Request (FMT 2) sent to server 183.59.168.166:8027
17:00:10 DEBUG [Worker 0] FCC State: INIT -> REQUESTED (Request sent)
17:00:10 DEBUG [Worker 0] FCC Response: FMT=3, result=0, signal_port=8027, media_port=0, valid_time=3600, speed=0 bps, speed_after_sync=0 bps
17:00:10 DEBUG [Worker 0] FCC (Telecom): Server provided new IP: 183.59.174.45
17:00:10 DEBUG [Worker 0] FCC (Telecom): Server requests redirection to new server 183.59.174.45:8027 (redirect #1)
17:00:10 DEBUG [Worker 0] FCC State: REQUESTED -> INIT (Server redirect)
17:00:10 DEBUG [Worker 0] FCC: Initializing FCC session and sending request
17:00:10 DEBUG [Worker 0] FCC (Telecom): Request (FMT 2) sent to server 183.59.174.45:8027
17:00:10 DEBUG [Worker 0] FCC State: INIT -> REQUESTED (Request sent)
17:00:10 DEBUG [Worker 0] FCC Response: FMT=3, result=0, signal_port=0, media_port=8082, valid_time=0, speed=10.41 Mbps, speed_after_sync=1.73 Mbps
17:00:10 DEBUG [Worker 0] FCC (Telecom): Server provided new media port: 8082
17:00:10 DEBUG [Worker 0] FCC State: REQUESTED -> UNICAST_PENDING (Server accepted request)
17:00:10 DEBUG [Worker 0] FCC (Telecom): Server accepted request, waiting for unicast stream
17:00:10 DEBUG [Worker 0] FCC State: UNICAST_PENDING -> UNICAST_ACTIVE (First unicast packet received)
17:00:10 INFO [Worker 0] FCC: Unicast stream started successfully
17:00:10 DEBUG [Worker 0] RTP packet loss detected - expected seq 50929, received 50932 (gap: 3 packets)
17:00:10 DEBUG [Worker 0] Out-of-order RTP packet discarded - last sent seq 50933, received 50929 (diff: -4)
17:00:10 DEBUG [Worker 0] Out-of-order RTP packet discarded - last sent seq 50933, received 50930 (diff: -3)
17:00:10 DEBUG [Worker 0] Out-of-order RTP packet discarded - last sent seq 50933, received 50931 (diff: -2)
17:00:11 DEBUG [Worker 0] Client disconnected
17:00:11 DEBUG [Worker 0] FCC: Sending termination packet (cleanup)
17:00:11 DEBUG [Worker 0] FCC (Telecom): Termination packet (FMT 5) sent (cleanup), seqn=0
17:00:11 DEBUG [Worker 0] FCC: Socket closed
17:00:11 DEBUG [Worker 0] RTSP: Cleanup called in state 0, skipping (already cleaning up or done)
17:00:11 DEBUG [Worker 0] RTSP: Session cleanup complete
17:00:11 INFO [Worker 0] New client 192.168.88.108:7081 requested URL: /%E5%B9%BF%E4%B8%9C%E7%94%B5%E8%A7%86%E5%8F%B0/%E5%B9%BF%E4%B8%9C%E5%8D%AB%E8%A7%86 (method: GET)
17:00:11 INFO [Worker 0] Service matched: 广东电视台/广东卫视
17:00:11 INFO [Worker 0] FCC: Using Telecom/ZTE/Fiberhome FCC protocol
17:00:11 DEBUG [Worker 0] FCC: Initializing FCC session and sending request
17:00:11 DEBUG [Worker 0] FCC: Bound client socket to port 40055
17:00:11 DEBUG [Worker 0] FCC: Socket registered with epoll
17:00:11 DEBUG [Worker 0] FCC (Telecom): Request (FMT 2) sent to server 183.59.168.166:8027
17:00:11 DEBUG [Worker 0] FCC State: INIT -> REQUESTED (Request sent)
17:00:11 WARN [Worker 0] FCC: Server response timeout (80 ms), falling back to multicast
17:00:11 DEBUG [Worker 0] FCC State: REQUESTED -> MCAST_ACTIVE (Signaling timeout)
17:00:11 INFO [Worker 0] Multicast: Successfully joined group
17:00:11 DEBUG [Worker 0] Multicast: Socket registered with epoll`
这个是日志，相关的路由规则防火墙都指向了pppoe-iptv ，我使用vlan 来进行的，eth0为物理口 ，设置VLAN (802.1q) vlan41网络（pppoe方式），接口设置wan，vlan45iptv（pppoe模式）接口设置iptv；eth1物理口，设置网桥设备为br-lan，接口lan，现在就出现了上面的这些错误！FCC成功率很低！检查了相关的配置，都没有问题！
配置文件：
组播可以正常播放，单播一直没有测试成功！fcc偶尔一次能够成功！见上面的相关日志！