Note: The IPv6 address in this question isn’t the real IP.
There are two servers
- node1(IPv6: 123a:a4b5:0102:t234:cd90:3:0:2)
- node2(IPv6: 123a:a4b5:0102:t234:cd91:3:0:2)
On the node1, installed AWX by docker-compose, so the real application is in the container.
It can be connected from node1 to node2
[root@node1] ping6 123a:a4b5:0102:t234:cd91:3:0:2
PING 123a:a4b5:0102:t234:cd91:3:0:2(123a:a4b5:0102:t234:cd91:3:0:2) 56 data bytes
64 bytes from 123a:a4b5:0102:t234:cd91:3:0:2: icmp_seq=1 ttl=64 time=0.319 ms
Run ip -6 route on node1, found
default via 123a:a4b5:0102:t234::ffff dev lan0 metric 1 pref medium
Set 123a:a4b5:0102:t234 in the /etc/docker/daemon.json
{
"ipv6": true,
"fixed-cidr-v6": "123a:a4b5:0102:t234::ffff/64"
}
Restart docker. From docker network inspect bridge found
...
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": true,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": [
{
"Subnet": "172.17.0.0/16",
"Gateway": "172.17.0.1"
},
{
"Subnet": "123a:a4b5:0102:t234::/64",
"Gateway": "123a:a4b5:0102:t234::1"
}
]
},
...
Connected awx_web to docker’s bridge network
docker network connect bridge awx_web
Login to awx_web container check ip, generated this IPv6
441: eth1@if442: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet 172.17.0.2/16 brd 172.17.255.255 scope global eth1
valid_lft forever preferred_lft forever
inet6 123a:a4b5:0102:t234:0:242:ac11:2/64 scope global nodad
valid_lft forever preferred_lft forever
inet6 [secret]/64 scope link
valid_lft forever preferred_lft forever
It can be ping by itself(123a:a4b5:0102:t234:0:242:ac11:2), but can’t ping the IPv6 on node2
sh-4.4# ping6 123a:a4b5:0102:t234:cd91:3:0:2
PING 123a:a4b5:0102:t234:cd91:3:0:2(123a:a4b5:0102:t234:cd91:3:0:2) 56 data bytes
From 123a:a4b5:0102:t234:cd91:3:0:2: icmp_seq=1 Destination unreachable: Address unreachable
How to config the network to let it work in this case?