ipv6_address broken #3988
Description
I am using docker 1.12.1 on Ubuntu 16.04, and docker-compose 1.8.1. The Compose file from https://docs.docker.com/compose/compose-file/#ipv4-address-ipv6-address does not run correctly: The ipv6_address setting seems to be ignored. I tried on various machines.
For reference, I created docker-compose.yml with the following content:
version: '2'
services:
app:
image: busybox
command: ifconfig
networks:
app_net:
ipv4_address: 172.16.238.10
ipv6_address: 2001:3984:3989::10
networks:
app_net:
driver: bridge
driver_opts:
com.docker.network.enable_ipv6: "true"
ipam:
driver: default
config:
- subnet: 172.16.238.0/24
gateway: 172.16.238.1
- subnet: 2001:3984:3989::/64
gateway: 2001:3984:3989::1
Now, running docker-compose up produces
Creating network "tmp_app_net" with driver "bridge"
Creating tmp_app_1
Attaching to tmp_app_1
app_1 | eth0 Link encap:Ethernet HWaddr 02:42:AC:10:EE:0A
app_1 | inet addr:172.16.238.10 Bcast:0.0.0.0 Mask:255.255.255.0
app_1 | inet6 addr: fe80::42:acff:fe10:ee0a/64 Scope:Link
app_1 | UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
app_1 | RX packets:4 errors:0 dropped:0 overruns:0 frame:0
app_1 | TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
app_1 | collisions:0 txqueuelen:0
app_1 | RX bytes:520 (520.0 B) TX bytes:90 (90.0 B)
app_1 |
app_1 | lo Link encap:Local Loopback
app_1 | inet addr:127.0.0.1 Mask:255.0.0.0
app_1 | inet6 addr: ::1/128 Scope:Host
app_1 | UP LOOPBACK RUNNING MTU:65536 Metric:1
app_1 | RX packets:0 errors:0 dropped:0 overruns:0 frame:0
app_1 | TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
app_1 | collisions:0 txqueuelen:1
app_1 | RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
app_1 |
tmp_app_1 exited with code 0
The IPv6 address is not assigned. That seems to be a bug, either in ipv6_address itself, or there is some required configuration step missing from the documentation.
For further information, here's what I already tried:
- Starting the docker daemon with
--ipv6 - Starting the docker daemon with
--ipv6 --fixed-cidr-v6="2001:3984:3989::/64"- Note that
docker run -it busybox ifconfigactually gives me an IPv6 address here (from the--fixed-cidrsubnet which is assigned to the defaultbridgenetwork)
- Note that
- Using my actual IPv6 subnet instead of the one from the code example, and repeating 2. with this subnet