Docker Swarm networks not working over IPv6

[meyskens]

Description

When setting up Docker Swarm over IPv6 everything works fine except setting up an overlay network. The network can be used when on the same server but when trying to reach a container on another server it doesn't work, they are also not listed in the peers under docker network inspect. The journald logs keep telling Docker isn't able to add itself to a memberlist.

May 25 14:11:18 swarm-node-ldn1 dockerd[459]: time="2017-05-25T14:11:18.935435123Z" level=error msg="Failed to join memberlist [2a01:7e01::f03c:91ff:fe60:5b29] on retry: 1 error(s) occurred:\n\n* Failed to resolve 2a01:7e01::f03c:91ff:fe60:5b29: too many colons in address 2a01:7e01::f03c:91ff:fe60:5b29"

It seems to indicate that it is unable to recognize that this is an IPv6.

Steps to reproduce the issue:

1. Set up Docker Swarm on at least 2 servers over IPv6
2. Create an overlay network
3. Try to make a service access another service on another server

Describe the results you received:
Networks not able to connect to another server. With the above logs.

Describe the results you expected:
Ability to connect to other services.

Output of docker version:

Client:
 Version:      17.05.0-ce
 API version:  1.29
 Go version:   go1.7.5
 Git commit:   89658be
 Built:        Thu May  4 22:04:27 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.05.0-ce
 API version:  1.29 (minimum version 1.12)
 Go version:   go1.7.5
 Git commit:   89658be
 Built:        Thu May  4 22:04:27 2017
 OS/Arch:      linux/amd64
 Experimental: false

Additional environment details (AWS, VirtualBox, physical, etc.):
Running on Linode with the Debian kernel for VXLan support

[webologics]

@meyskens How was this resolved? I see the behavior you are describing still in 17.09.