/etc/hosts contains IPv6 entries even when IPv6 is not enabled #35954
Description
Description
/etc/hosts contains IPv6 entries when IPv6 is not enabled in daemon.json
The container interfaces do not have IPv6 addresses assigned:
# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
5886: eth0@if5887: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:ac:11:00:03 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.3/16 scope global eth0
valid_lft forever preferred_lft forever
Steps to reproduce the issue:
- if enabled, disable IPv6 in daemon.json. By default, the Docker daemon configures the container network for IPv4 only.
$ docker run debian:jessie cat /etc/hosts
Describe the results you received:
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.17.0.3 1749a2a20d9e
Describe the results you expected:
127.0.0.1 localhost
172.17.0.3 1749a2a20d9e
Output of docker version:
$ docker version
Client:
Version: 17.06.2-ce
API version: 1.30
Go version: go1.8.3
Git commit: cec0b72
Built: Tue Sep 5 19:57:21 2017
OS/Arch: linux/amd64
Server:
Version: 17.06.2-ce
API version: 1.30 (minimum version 1.12)
Go version: go1.8.3
Git commit: cec0b72
Built: Tue Sep 5 19:59:19 2017
OS/Arch: linux/amd64
Experimental: false
Output of docker info:
$ docker info
Containers: 74
Running: 21
Paused: 0
Stopped: 53
Images: 106
Server Version: 17.06.2-ce
Storage Driver: overlay
Backing Filesystem: extfs
Supports d_type: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 6e23458c129b551d5c9871e5174f6b1b7f6d1170
runc version: 810190ceaa507aa2727d7ae6f4790c76ec150bd2
init version: 949e6fa
Security Options:
seccomp
Profile: default
Kernel Version: 4.9.69-rancher
Operating System: RancherOS v1.1.2
OSType: linux
Architecture: x86_64
CPUs: 56
Total Memory: 251.8GiB
Name: REDACTED
ID: I6BI:SM5F:GFI3:DWLQ:6ARS:PL46:CINJ:CBEG:KKKL:RM52:NVO4:IKLH
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Experimental: false
Insecure Registries:
REDACTED
127.0.0.0/8
Live Restore Enabled: false
Additional environment details (AWS, VirtualBox, physical, etc.):
Running in RancherOS v1.1.2