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Description
Version
2025.7.5
What type of installation are you using?
Docker
Browser
Chrome
What happened?
I installed ESPHome with the following docker compose file:
$ cat compose.yaml
---
services:
esphome:
image: ghcr.io/esphome/esphome:latest
container_name: esphome
hostname: rocker
user: "3005:3005"
deploy:
resources:
limits:
memory: 1G
env_file:
- ./secrets.env
environment:
TZ: Europe/London
volumes:
- ./config:/config
- /etc/localtime:/etc/localtime:ro
privileged: true
network_mode: host
restart: unless-stopped
And I have noted that a warning is logged:
2025-08-06 12:39:23,817 WARNING No buffer space available when adding 172.22.0.1 to multicast group, try increasing `net.ipv4.igmp_max_memberships` to `1024` in sysctl.conf
2025-08-06 12:39:23,817 WARNING No buffer space available when adding 172.26.0.1 to multicast group, try increasing `net.ipv4.igmp_max_memberships` to `1024` in sysctl.conf
2025-08-06 12:39:23,817 WARNING No buffer space available when adding 172.25.0.1 to multicast group, try increasing `net.ipv4.igmp_max_memberships` to `1024` in sysctl.conf
2025-08-06 12:39:23,817 WARNING No buffer space available when adding 172.47.0.1 to multicast group, try increasing `net.ipv4.igmp_max_memberships` to `1024` in sysctl.conf
2025-08-06 12:39:24,298 INFO 200 GET /devices (10.27.0.194) 2.51ms
2025-08-06 12:39:30,297 INFO 304 GET /devices (10.27.0.194) 2.03ms
2025-08-06 12:39:31,321 WARNING Cannot use icmplib because privileges are insufficient
How to reproduce
- Install ESPHome Device Builder with the docker compose file I listed above.
- execute
docker logs esphome
- find the warning lines.
Expected behavior
I expect no warning nor error shown.
Relevant log output
Screenshots
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