Issues with DHCP Mode

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Matt H.

• March 24, 2022 17:30

I have been using a FWB+ in Simple mode for a year now and want to switch to DHCP mode in part, so I can take advantage of a third-party VPN service.  I'd prefer not to completely disable DHCP on my router (Archer A7) but instead set a DHCP limit to my FWB+  IP address only and also reserve that same address. 

Once I switch over the FWB+ to DHCP Mode and do the above router changes, I get a warning on the FWB+ that the DHCPv6 needs to be turned off on the router.  I then do that and immediately lose my internet connection and have to reboot the modem and router.  My set-up is an Xfinity Arris modem in bridge mode to a TP-Link Archer A7v5 router.

Any ideas as to what could be going on here?

Thanks for answering.

 

 

   

 

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  Firewalla

  • March 24, 2022 19:00

  When you turn off DHCPv6, did you also turn off DHCP? if you manually configured an IP on a device on your main network, see if you can ping the tplink router. 

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  Matt H.

  • March 24, 2022 19:39
  • Edited

  So, I have now disabled both DHCP and IPv6 on the router and was able to have the FWB+ take over DHCP functions.  I can see many of my devices have now been assigned IP addresses in the Overlay network, so that is a good sign. 

  What I am concerned about is that the 'Disable DHCPv6 on Router' warning is still showing on the FWB+ app.  I did log back into my router to confirm that both DHCP and IPv6 are shut off. 

  What is causing the FWB+ app to continue showing the DCHPv6 warning and is this anything to be concerned about going forward?  I am using Box version 1.9732 and not in the Beta program.

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  Firewalla

  • March 24, 2022 21:02

  Check your devices, and see if they have a real ipv6 address. (not the fexx... address) If they don't, then likely a display bug, please let me know if you are using android or ios

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  Matt H.

  • March 24, 2022 22:06

  All devices on this network with ipv6 addresses have a fexx... address.  I am using android.

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