DHCP Reservation requires Firewalla reboot

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wills

• May 20, 2024 14:31

Using Firewalla Gold Plus, went to the device, set a reserved IP and it doesn't apply.  Tried rebooting the affected device, and changing DHCP lease time to 1, nothing worked.  Note, this device does not have a way to set it's own IP manually, so it must be done on the Firewalla.  Only way I got it apply was rebooting the Firewalla, which seems really unnecessary for something like this.

Is this a known issue, or is there some sort of workaround?

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  Michael Bierman

  • May 20, 2024 14:44

  When a device is assigned an IP via Reservation it will keep the existing IP until the existing IP lease expires (24 hours after it got the IP by default). When the lease expires the new IP will be issued from then on. 
  
  If you want the IP to be assigned sooner, you may need to reboot the device and the device should request a new address. 

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  wills

  • May 20, 2024 14:49

  Michael, neither of those things you stated worked.  I said:
  
  "Tried rebooting the affected device, and changing DHCP lease time to 1, nothing worked."
  
  In fact, I waited over 24 hours for the device (with DHCP lease time set to 1) to be reassigned, and it wasn't.  Like I said in the first post, the only way I got the reserved IP to apply was by rebooting the Firewalla.

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  Firewalla

  • May 20, 2024 15:57

  Did you check if you have that IP already being used by another device? if you already checked, please let me know, I can open a ticket for you. 

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  wills

  • May 20, 2024 15:58

  Firewalla, I was setting DHCP reservation on 3 devices.  None of them had their IP being used by another device.  Thanks.

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