[BUG] Ifname label in driver-opt doesn't work #12740
Description
Description
Since release 28.0.0 we can add a new netlabel com.docker.network.endpoint.ifname to customize the interface name used when connecting a container to a network.
When added in a docker compose file, this network driver option is not applied, resulting in a container without the expected custom network interface name.
Steps To Reproduce
1. Environment
docker version
Client: Docker Engine - Community
Version: 28.0.4
API version: 1.48
Go version: go1.23.7
Git commit: b8034c0
Built: Tue Mar 25 15:07:11 2025
OS/Arch: linux/amd64
Context: default
Server: Docker Engine - Community
Engine:
Version: 28.0.4
API version: 1.48 (minimum version 1.24)
Go version: go1.23.7
Git commit: 6430e49
Built: Tue Mar 25 15:07:11 2025
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.7.22
GitCommit: 7f7fdf5fed64eb6a7caf99b3e12efcf9d60e311c
runc:
Version: 1.1.14
GitCommit: v1.1.14-0-g2c9f560
docker-init:
Version: 0.19.0
GitCommit: de40ad0
2. Configuration
This is an example docker compose file:
services:
alpine:
image: alpine
command: sleep 100
networks:
net0:
networks:
net0:
ipam:
driver: default
config:
- subnet: 192.168.90.0/24
driver_opts:
com.docker.network.endpoint.ifname: net0
3. Command
docker compose up -d
4. Result/Error
docker exec -it docker-netlabel-alpine-1 sh
/ # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
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
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0@if661: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue state UP
link/ether 6a:ab:c8:45:23:9e brd ff:ff:ff:ff:ff:ff
inet 192.168.90.2/24 brd 192.168.90.255 scope global eth0
valid_lft forever preferred_lft forever
/ #
The interface name is supposed to be net0 but the actual name is still eth0
Compose Version
Docker Compose version v2.34.0
Docker Environment
Client: Docker Engine - Community
Version: 28.0.4
Context: default
Debug Mode: false
Plugins:
buildx: Docker Buildx (Docker Inc.)
Version: v0.17.1
Path: /usr/libexec/docker/cli-plugins/docker-buildx
compose: Docker Compose (Docker Inc.)
Version: v2.34.0
Path: /usr/libexec/docker/cli-plugins/docker-compose
scout: Docker Scout (Docker Inc.)
Version: v1.12.0
Path: /home/ab/.docker/cli-plugins/docker-scout
Server:
Containers: 2
Running: 1
Paused: 0
Stopped: 1
Images: 97
Server Version: 28.0.4
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: systemd
Cgroup Version: 2
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 7f7fdf5fed64eb6a7caf99b3e12efcf9d60e311c
runc version: v1.1.14-0-g2c9f560
init version: de40ad0
Security Options:
apparmor
seccomp
Profile: builtin
cgroupns
Kernel Version: 6.8.0-57-generic
Operating System: Ubuntu 22.04.5 LTS
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 62.68GiB
Name: zb
ID: 1981e7de-7493-4ebe-9805-c5edd353c5b6
Docker Root Dir: /var/lib/docker
Debug Mode: false
Experimental: false
Insecure Registries:
::1/128
127.0.0.0/8
Live Restore Enabled: false