Roteamento IPV6 do Docker

Question

Meu host tem o ipv6 que funciona bem. Mas meus contêineres não podem se conectar no ipv6.

Docker version 18.03.1-ce, build 9ee9f40

/ etc / network / interfaces (host)

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 (host)

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 rota 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 apenas trava

    

Answer 1

Tente passar --network host ao seu comando docker run. Isso dará ao seu contêiner acesso a todas as interfaces no host.

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

    

Answer 2

Altere o / 64 para um / 80.

/etc/docker/daemon.json

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

Você pode precisar ativar

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