问题描述
我让Docker运行在OMV5 NAS（Debian Buster）上。
我有几个容器，我正在尝试建立一个Wireguard VPN，以从外部进入我的家庭网络。
每次我启动Wireguard容器（linuxserver / wireguard）时，所有其他容器都会失去Internet连接。
当我停止Wireguard容器时，其他容器仍然没有互联网连接。当我重新启动NAS（在Wireguard停止的情况下）时，它又可以正常工作。
Wireguard运行时，其他docker容器可以ping通主机（10.0.0.3），并且彼此ping通（例如172.17.0.2）。
因此，这些命令有效：
docker run -it busybox ping 172.17.0.2
docker run -it busybox ping 10.0.0.3
但是这些不是：
docker run -it busybox ping 10.0.0.1
docker run -it busybox ping 8.8.8.8
主机具有完整的Internet连接，没有任何问题。
当我连接到VPN时，我可以看到整个内部家庭网络。
所有容器都已连接到BRIDGE网络。当我将它们更改为HOST网络时，它们可以工作，但是我想将它们保留在桥接器中。
Docker版本19.03.12，内部版本48a6621
我猜这是某种网络配置问题。
为了方便起见，我在下面列出了一些iptables信息。
VPN在端口51820上运行。
没有VPN
root@nas:~# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy DROP)
target prot opt source destination
DOCKER-USER all -- anywhere anywhere
DOCKER-ISOLATION-STAGE-1 all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain DOCKER (1 references)
target prot opt source destination
ACCEPT tcp -- anywhere 172.17.0.2 tcp dpt:9000
ACCEPT tcp -- anywhere 172.17.0.2 tcp dpt:8000
ACCEPT tcp -- anywhere 172.17.0.4 tcp dpt:51413
ACCEPT tcp -- anywhere 172.17.0.5 tcp dpt:7878
ACCEPT tcp -- anywhere 172.17.0.6 tcp dpt:8920
ACCEPT tcp -- anywhere 172.17.0.7 tcp dpt:9117
ACCEPT tcp -- anywhere 172.17.0.8 tcp dpt:6767
ACCEPT tcp -- anywhere 172.17.0.9 tcp dpt:8989
ACCEPT udp -- anywhere 172.17.0.4 udp dpt:51413
ACCEPT tcp -- anywhere 172.17.0.6 tcp dpt:8096
ACCEPT tcp -- anywhere 172.17.0.4 tcp dpt:9091
Chain DOCKER-ISOLATION-STAGE-1 (1 references)
target prot opt source destination
DOCKER-ISOLATION-STAGE-2 all -- anywhere anywhere
RETURN all -- anywhere anywhere
Chain DOCKER-ISOLATION-STAGE-2 (1 references)
target prot opt source destination
DROP all -- anywhere anywhere
RETURN all -- anywhere anywhere
Chain DOCKER-USER (1 references)
target prot opt source destination
RETURN all -- anywhere anywhere
# Warning: iptables-legacy tables present,use iptables-legacy to see them
root@nas:~# iptables -S
-P INPUT ACCEPT
-P FORWARD DROP
-P OUTPUT ACCEPT
-N DOCKER
-N DOCKER-ISOLATION-STAGE-1
-N DOCKER-ISOLATION-STAGE-2
-N DOCKER-USER
-A FORWARD -j DOCKER-USER
-A FORWARD -j DOCKER-ISOLATION-STAGE-1
-A FORWARD -o docker0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -o docker0 -j DOCKER
-A FORWARD -i docker0 ! -o docker0 -j ACCEPT
-A FORWARD -i docker0 -o docker0 -j ACCEPT
-A DOCKER -d 172.17.0.2/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 9000 -j ACCEPT
-A DOCKER -d 172.17.0.2/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 8000 -j ACCEPT
-A DOCKER -d 172.17.0.4/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 51413 -j ACCEPT
-A DOCKER -d 172.17.0.5/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 7878 -j ACCEPT
-A DOCKER -d 172.17.0.6/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 8920 -j ACCEPT
-A DOCKER -d 172.17.0.7/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 9117 -j ACCEPT
-A DOCKER -d 172.17.0.8/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 6767 -j ACCEPT
-A DOCKER -d 172.17.0.9/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 8989 -j ACCEPT
-A DOCKER -d 172.17.0.4/32 ! -i docker0 -o docker0 -p udp -m udp --dport 51413 -j ACCEPT
-A DOCKER -d 172.17.0.6/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 8096 -j ACCEPT
-A DOCKER -d 172.17.0.4/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 9091 -j ACCEPT
-A DOCKER-ISOLATION-STAGE-1 -i docker0 ! -o docker0 -j DOCKER-ISOLATION-STAGE-2
-A DOCKER-ISOLATION-STAGE-1 -j RETURN
-A DOCKER-ISOLATION-STAGE-2 -o docker0 -j DROP
-A DOCKER-ISOLATION-STAGE-2 -j RETURN
-A DOCKER-USER -j RETURN
root@nas:~# iptables-legacy -S
-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
使用VPN
root@nas:~# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy DROP)
target prot opt source destination
DOCKER-USER all -- anywhere anywhere
DOCKER-ISOLATION-STAGE-1 all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain DOCKER (1 references)
target prot opt source destination
ACCEPT tcp -- anywhere 172.17.0.2 tcp dpt:9000
ACCEPT tcp -- anywhere 172.17.0.2 tcp dpt:8000
ACCEPT tcp -- anywhere 172.17.0.4 tcp dpt:51413
ACCEPT tcp -- anywhere 172.17.0.5 tcp dpt:6767
ACCEPT tcp -- anywhere 172.17.0.6 tcp dpt:7878
ACCEPT tcp -- anywhere 172.17.0.7 tcp dpt:8989
ACCEPT tcp -- anywhere 172.17.0.8 tcp dpt:8920
ACCEPT tcp -- anywhere 172.17.0.9 tcp dpt:9117
ACCEPT udp -- anywhere 172.17.0.4 udp dpt:51413
ACCEPT tcp -- anywhere 172.17.0.8 tcp dpt:8096
ACCEPT tcp -- anywhere 172.17.0.4 tcp dpt:9091
ACCEPT udp -- anywhere 172.17.0.10 udp dpt:51820
Chain DOCKER-ISOLATION-STAGE-1 (1 references)
target prot opt source destination
DOCKER-ISOLATION-STAGE-2 all -- anywhere anywhere
RETURN all -- anywhere anywhere
Chain DOCKER-ISOLATION-STAGE-2 (1 references)
target prot opt source destination
DROP all -- anywhere anywhere
RETURN all -- anywhere anywhere
Chain DOCKER-USER (1 references)
target prot opt source destination
RETURN all -- anywhere anywhere
# Warning: iptables-legacy tables present,ESTABLISHED -j ACCEPT
-A FORWARD -o docker0 -j DOCKER
-A FORWARD -i docker0 ! -o docker0 -j ACCEPT
-A FORWARD -i docker0 -o docker0 -j ACCEPT
-A DOCKER -d 172.17.0.2/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 9000 -j ACCEPT
-A DOCKER -d 172.17.0.2/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 8000 -j ACCEPT
-A DOCKER -d 172.17.0.4/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 51413 -j ACCEPT
-A DOCKER -d 172.17.0.5/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 6767 -j ACCEPT
-A DOCKER -d 172.17.0.6/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 7878 -j ACCEPT
-A DOCKER -d 172.17.0.7/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 8989 -j ACCEPT
-A DOCKER -d 172.17.0.8/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 8920 -j ACCEPT
-A DOCKER -d 172.17.0.9/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 9117 -j ACCEPT
-A DOCKER -d 172.17.0.4/32 ! -i docker0 -o docker0 -p udp -m udp --dport 51413 -j ACCEPT
-A DOCKER -d 172.17.0.8/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 8096 -j ACCEPT
-A DOCKER -d 172.17.0.4/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 9091 -j ACCEPT
-A DOCKER -d 172.17.0.10/32 ! -i docker0 -o docker0 -p udp -m udp --dport 51820 -j ACCEPT
-A DOCKER-ISOLATION-STAGE-1 -i docker0 ! -o docker0 -j DOCKER-ISOLATION-STAGE-2
-A DOCKER-ISOLATION-STAGE-1 -j RETURN
-A DOCKER-ISOLATION-STAGE-2 -o docker0 -j DROP
-A DOCKER-ISOLATION-STAGE-2 -j RETURN
-A DOCKER-USER -j RETURN
# Warning: iptables-legacy tables present,use iptables-legacy to see them
root@nas:~# iptables-legacy -S
-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
解决方法
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