DHCP reservations not working for windows 10

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Zane L

• June 14, 2020 13:50

Hi

Anyone else noticed this? Reservations seem to work fine for majority of devices after a reboot or wifi toggle but windows 10 doesn't seem to be working. 

I did a packet capture and can see my device sending a DHCP option 50 with its previous used IP address in the request. Not sure if its aligning to an RFC but assume its always done this? So I'm thinking firewalla is just accepting this instead of offering the new reserved IP?

I had ddwrt on my router and reservations worked fine for all so wondering if there is something up with firewalla implementation?

Background info:

Had to move r7000 back to stock, DDWRT caused speed slowdowns and was unstable. It was previously in simple mode however decided to switch to DHCP so I could use the reservation feature as it comes in handy.

I have a Firewalla blue with a netgear r7000. I switched my netgear to 192.168.0.0/24 and set the overlay to 192.168.1.0/24 (Firewalla is 192.168.1.1 in the overlay).

 

 

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  Firewalla

  • June 14, 2020 23:08

  Reservation will fail if there is another device already using the IP address, can you please double-check?

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  Zane L

  • June 18, 2020 21:16

  No other devices using that address at all. Decided to just statically assign and its been like that for a few days. I've just switched back to dhcp and its working now so all good. 

  It is strange though, could just be my laptop. Ill switch IP's in the reservation again to an unused IP see if it picks it up this time. 

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  Ryan Hopkins

  • July 01, 2020 23:35

  Part of the problem with the DD-WRT KONG firmware for the R7000 is the fact that it disables the hardware acceleration capability and degrades overall performance and stability of the router. I love DD-WRT, but it has its limitations. You're not alone!

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