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Docker IPV6 路由

tag-icon • tag-icon docker ipv6
Docker IPV6 路由

我的主机有 ipv6，运行正常。但我的容器无法通过 ipv6 连接。

Docker version 18.03.1-ce, build 9ee9f40

/etc/network/interfaces（主机）

iface eth0 inet6 static
address 2001:xxxx:5000:20::0010
netmask 64
gateway 2001:xxxx:5000:20::1

/etc/docker/daemon.json

{
    "ipv6": true,
    "fixed-cidr-v6": "2001:xxxx:5000:20::/64",
    "default-gateway-v6": "2001:xxxx:5000:20::1"
}

sysctl（主机）

net.ipv6.conf.default.forwarding = 1
net.ipv6.conf.all.forwarding=1

docker run -it alpine ash -c “ip -6 addr show dev eth0; ip -6 route show; ping6 google.com”

259: eth0@if260: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 state UP 
    inet6 2001:xxxx:5000:20::242:ac11:2/64 scope global flags 02 
       valid_lft forever preferred_lft forever
    inet6 fe80::42:acff:fe11:2/64 scope link tentative 
       valid_lft forever preferred_lft forever

2001:xxxx:5000:20::/64 dev eth0  metric 256 
fe80::/64 dev eth0  metric 256 
default via 2001:xxxx:5000:20::1 dev eth0  metric 1024 
ff00::/8 dev eth0  metric 256 

PING google.com (2a00:1450:4009:801::200e): 56 data bytes

Ping 挂了

答案1

将 /64 更改为 /80。

/etc/docker/daemon.json

{
    "ipv6": true,
    "fixed-cidr-v6": "2001:xxxx:5000:20::/80",
}

您可能需要打开

sysctl -w net.ipv6.conf.all.proxy_ndp=1

答案2

尝试传递--network host给您的 docker run 命令。这将使您的容器可以访问主机上的所有接口。

来自docker文档： Note: --network="host" gives the container full access to local system services such as D-bus and is therefore considered insecure.

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