ipv6 addresses with square brackets cannot be used with the --add-host option #4648
Description
Description
Using any ipv6 address with --add-host produces an error:
for "--add-host" flag: invalid IP address in add-host: <ipv6 address>
Reproduce
$ docker run --add-host "host.docker.internal:[::1]" nginx
> invalid argument "host.docker.internal:[::1]" for "--add-host" flag: invalid IP address in add-host: "[::1]"
> See 'docker run --help'.
Expected behavior
I am looking to be able to curl -g -6 "http://[::1]:8080/" from inside of the container. This is not possible, as --add-host does not allow specifying [::1] as the host's address.
docker version
docker version
Client:
Cloud integration: v1.0.35+desktop.5
Version: 24.0.6
API version: 1.43
Go version: go1.20.7
Git commit: ed223bc
Built: Mon Sep 4 12:28:49 2023
OS/Arch: darwin/arm64
Context: desktop-linux
Server: Docker Desktop 4.25.0 (126437)
Engine:
Version: 24.0.6
API version: 1.43 (minimum version 1.12)
Go version: go1.20.7
Git commit: 1a79695
Built: Mon Sep 4 12:31:36 2023
OS/Arch: linux/arm64
Experimental: true
containerd:
Version: 1.6.22
GitCommit: 8165feabfdfe38c65b599c4993d227328c231fca
runc:
Version: 1.1.8
GitCommit: v1.1.8-0-g82f18fe
docker-init:
Version: 0.19.0
GitCommit: de40ad0docker info
docker info
Client:
Version: 24.0.6
Context: desktop-linux
Debug Mode: false
Plugins:
buildx: Docker Buildx (Docker Inc.)
Version: v0.11.2-desktop.5
Path: /Users/kai/.docker/cli-plugins/docker-buildx
compose: Docker Compose (Docker Inc.)
Version: v2.23.0-desktop.1
Path: /Users/kai/.docker/cli-plugins/docker-compose
dev: Docker Dev Environments (Docker Inc.)
Version: v0.1.0
Path: /Users/kai/.docker/cli-plugins/docker-dev
extension: Manages Docker extensions (Docker Inc.)
Version: v0.2.20
Path: /Users/kai/.docker/cli-plugins/docker-extension
init: Creates Docker-related starter files for your project (Docker Inc.)
Version: v0.1.0-beta.9
Path: /Users/kai/.docker/cli-plugins/docker-init
sbom: View the packaged-based Software Bill Of Materials (SBOM) for an image (Anchore Inc.)
Version: 0.6.0
Path: /Users/kai/.docker/cli-plugins/docker-sbom
scan: Docker Scan (Docker Inc.)
Version: v0.26.0
Path: /Users/kai/.docker/cli-plugins/docker-scan
scout: Docker Scout (Docker Inc.)
Version: v1.0.9
Path: /Users/kai/.docker/cli-plugins/docker-scout
Server:
Containers: 33
Running: 0
Paused: 0
Stopped: 33
Images: 23
Server Version: 24.0.6
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Using metacopy: false
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 2
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 8165feabfdfe38c65b599c4993d227328c231fca
runc version: v1.1.8-0-g82f18fe
init version: de40ad0
Security Options:
seccomp
Profile: unconfined
cgroupns
Kernel Version: 6.4.16-linuxkit
Operating System: Docker Desktop
OSType: linux
Architecture: aarch64
CPUs: 10
Total Memory: 7.661GiB
Name: linuxkit-a6b776a9963f
ID: b7de54a1-66ec-4ab2-b3d6-ddea4d05bfdc
Docker Root Dir: /var/lib/docker
Debug Mode: false
HTTP Proxy: http.docker.internal:3128
HTTPS Proxy: http.docker.internal:3128
No Proxy: hubproxy.docker.internal
Experimental: true
Insecure Registries:
hubproxy.docker.internal:5555
127.0.0.0/8
Live Restore Enabled: false
WARNING: daemon is not using the default seccomp profileAdditional Info
daemon.json file:
{
"builder": {
"gc": {
"defaultKeepStorage": "20GB",
"enabled": true
}
},
"experimental": true,
"fixed-cidr-v6": "fdaa::/16",
"ip6tables": true,
"ipv6": true
}