一次Flannel和Docker网络不通定位问题

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[iyunv@k8s-master ~]# tcpdump -i enp0s3 -nn host 192.168.44.109　　
tcpdump: verbose output suppressed, use
-v or -vv for full protocol decode　　
listening on enp0s3, link
-type EN10MB (Ethernet), capture>
16:46:59.146611 IP 192.168.44.108.8080 > 192.168.44.109.50060: Flags [P.], seq 1518764712:1518765120, ack 650646529, win 327, options [nop,nop,TS val 4304586 ecr 7794005], length 408　　
16:46:59.146863 IP 192.168.44.108.443 > 192.168.44.109.51564: Flags [P.], seq 474973224:474973663, ack 3595606551, win 248, options [nop,nop,TS val 4304586 ecr 7794006], length 439
　　
16:46:59.147013 IP 192.168.44.109.50060 > 192.168.44.108.8080: Flags [.], ack 408, win 1424, options [nop,nop,TS val 7794610 ecr 4304586], length 0
　　
16:46:59.147301 IP 192.168.44.109.51564 > 192.168.44.108.443: Flags [.], ack 439, win 1407, options [nop,nop,TS val 7794610 ecr 4304586], length 0
　　
16:46:59.224901 IP 192.168.44.109.5353 > 224.0.0.251.5353: 0*- [0q] 1/0/0 (Cache flush) PTR node1.local. (109)
　　
16:46:59.259598 IP 192.168.44.109.34266 > 192.168.44.108.443: Flags [P.], seq 3602262654:3602262700, ack 901869271, win 1407, options [nop,nop,TS val 7794724 ecr 4297197], length 46
　　
16:46:59.267671 IP 192.168.44.108.8285 > 192.168.44.109.8285: UDP, length 84
　　
16:46:59.269133 IP 192.168.44.109.8285 > 192.168.44.108.8285: UDP, length 84
　　
16:46:59.270082 IP 192.168.44.108.443 > 192.168.44.109.34266: Flags [P.], seq 1:66, ack 46, win 1432, options [nop,nop,TS val 4304709 ecr 7794724], length 65
　　
16:46:59.270419 IP 192.168.44.108.443 > 192.168.44.109.34266: Flags [P.], seq 66:639, ack 46, win 1432, options [nop,nop,TS val 4304709 ecr 7794724], length 573
　　
16:46:59.270734 IP 192.168.44.109.34266 > 192.168.44.108.443: Flags [.], ack 66, win 1407, options [nop,nop,TS val 7794735 ecr 4304709], length 0
　　
16:46:59.271040 IP 192.168.44.109.34266 > 192.168.44.108.443: Flags [.], ack 639, win 1407, options [nop,nop,TS val 7794735 ecr 4304709], length 0
　　
16:46:59.272370 IP 192.168.44.109.34266 > 192.168.44.108.443: Flags [P.], seq 46:94, ack 639, win 1407, options [nop,nop,TS val 7794736 ecr 4304709], length 48
　　
16:46:59.272522 IP 192.168.44.109.34266 > 192.168.44.108.443: Flags [P.], seq 94:667, ack 639, win 1407, options [nop,nop,TS val 7794736 ecr 4304709], length 573
　　
16:46:59.272743 IP 192.168.44.109.34266 > 192.168.44.108.443: Flags [P.], seq 667:705, ack 639, win 1407, options [nop,nop,TS val 7794736 ecr 4304709], length 38
　　
16:46:59.278885 IP 192.168.44.108.443 > 192.168.44.109.34266: Flags [.], ack 705, win 1432, options [nop,nop,TS val 4304718 ecr 7794736], length 0
　　
16:46:59.283084 IP 192.168.44.108.443 > 192.168.44.109.34266: Flags [P.], seq 639:681, ack 705, win 1432, options [nop,nop,TS val 4304722 ecr 7794736], length 42
　　
16:46:59.283224 IP 192.168.44.108.443 > 192.168.44.109.34266: Flags [P.], seq 681:723, ack 705, win 1432, options [nop,nop,TS val 4304722 ecr 7794736], length 42
　　
16:46:59.284143 IP 192.168.44.109.34266 > 192.168.44.108.443: Flags [.], ack 723, win 1407, options [nop,nop,TS val 7794748 ecr 4304722], length 0
　　
16:46:59.287279 IP 192.168.44.108.8080 > 192.168.44.109.50060: Flags [P.], seq 408:824, ack 1, win 327, options [nop,nop,TS val 4304726 ecr 7794610], length 416
　　
16:46:59.287584 IP 192.168.44.109.50060 > 192.168.44.108.8080: Flags [.], ack 824, win 1424, options [nop,nop,TS val 7794751 ecr 4304726], length 0