flannel

Flannel config:
  cni-conf.json: |
    {
      "name": "cbr0",
      "plugins": [
        {
          "type": "flannel",
          "delegate": {
            "hairpinMode": true,
            "isDefaultGateway": true
          }
        },
        {
          "type": "portmap",
          "capabilities": {
            "portMappings": true
          }
        }
      ]
    }
  net-conf.json: |
    {
      "Network": "10.244.0.0/16",
      "Backend": {
        "Type": "vxlan"
      }
    }

Flannel log:

15:35:59 main.go:475] Determining IP address of default interface
15:35:59 main.go:488] Using interface with name eth0 and address 206.189.96.121
15:35:59 main.go:505] Defaulting external address to interface address (206.189.96.121)
15:35:59 kube.go:131] Waiting 10m0s for node controller to sync
15:35:59 kube.go:294] Starting kube subnet manager
15:36:00 kube.go:138] Node controller sync successful
15:36:00 main.go:235] Created subnet manager: Kubernetes Subnet Manager - worker3
15:36:00 main.go:238] Installing signal handlers
15:36:00 main.go:353] Found network config - Backend type: vxlan
15:36:00 vxlan.go:120] VXLAN config: VNI=1 Port=0 GBP=false DirectRouting=false
15:36:00 main.go:300] Wrote subnet file to /run/flannel/subnet.env
15:36:00 main.go:304] Running backend.
15:36:00 main.go:322] Waiting for all goroutines to exit
15:36:00 vxlan_network.go:60] watching for new subnet leases
15:36:00 iptables.go:115] Some iptables rules are missing; deleting and recreating rules
15:36:00 iptables.go:137] Deleting iptables rule: -s 10.244.0.0/16 -d 10.244.0.0/16 -j RETURN
15:36:00 iptables.go:115] Some iptables rules are missing; deleting and recreating rules
15:36:00 iptables.go:137] Deleting iptables rule: -s 10.244.0.0/16 -j ACCEPT
15:36:00 iptables.go:137] Deleting iptables rule: -s 10.244.0.0/16 ! -d 224.0.0.0/4 -j MASQUERADE
15:36:00 iptables.go:137] Deleting iptables rule: ! -s 10.244.0.0/16 -d 10.244.2.0/24 -j RETURN
15:36:00 iptables.go:137] Deleting iptables rule: ! -s 10.244.0.0/16 -d 10.244.0.0/16 -j MASQUERADE
15:36:00 iptables.go:125] Adding iptables rule: -s 10.244.0.0/16 -d 10.244.0.0/16 -j RETURN
15:36:00 iptables.go:125] Adding iptables rule: -s 10.244.0.0/16 ! -d 224.0.0.0/4 -j MASQUERADE
15:36:00 iptables.go:125] Adding iptables rule: ! -s 10.244.0.0/16 -d 10.244.2.0/24 -j RETURN
15:36:00 iptables.go:125] Adding iptables rule: ! -s 10.244.0.0/16 -d 10.244.0.0/16 -j MASQUERADE
15:36:01 iptables.go:137] Deleting iptables rule: -d 10.244.0.0/16 -j ACCEPT
15:36:01 iptables.go:125] Adding iptables rule: -s 10.244.0.0/16 -j ACCEPT
15:36:01 iptables.go:125] Adding iptables rule: -d 10.244.0.0/16 -j ACCEPT