DHCP not working on Windows

[obzocker]

The DHCP on Windows does not work for me.

Every other device get's a valid lease. But all three of my Windows devices do not.

I have tried everything:

• new network driver install
• restart network adapter
• troubleshoot helper
• restart pc
• try commands : "netsh winsock reset" and "netsh int ip reset"

I also tried manually acquirering a new ip address with "ipconfig /release" and "ipconfig /renew" over the windows command line

but everytime I tried that I got the error (unfortunatly not usefull): "An error occurred while renewing interface Ethernet : The data is invalid."

I have installed gravity with docker-compose:

version: "3.8"

services:
  gravity:
    container_name: gravity
    hostname: gravity
    image: ghcr.io/beryju/gravity:stable
    restart: unless-stopped
    volumes:
      - gravity:/data
    network_mode: host

    logging:
      driver: json-file
      options:
        max-size: "10m"
        max-file: "3"

volumes:
  gravity:
    external: true

Is this problem known and are there workarounds?

[BeryJu]

Can you post the logs that happen while this error occurs in windows?

Also with gravity 0.6.19 you can run gravity cli export --safe (in the container), which will dump the database to JSON (with all the sensitive data removed), could you post that on pastebin on directly here?

[obzocker]

I'm sorry but I've already changed back from gravity to pihole and I don't have the time to change everything again.

[TomSipacom]

Hello, I had the same problem. On Windows clients DHCP was not working, but on Linux clients there was no problem.
I took a Wireshark trace (on my Windows client) and found out that Option: (15) Domain Name gave a value of . I added the value to the DHCP server and then it started to work.

[jtmusson]

#I can add that I also had a Windows 11 client which rejected the DHCP lease until I added a domain_name value under Advanced in the scope settings.