Everything getting IPv6 addresses all of the sudden.

Follow

Joel Warne

• September 04, 2026 01:23

Woke up one morning and while Firewalla was on and serving, my MacBook wouldn’t connect to the Internet. Realized it was given an IPv6 address overnight. All my devices were, and that’s what they were going get. Somehow I changed it and got it back, but then MacBook Pro wouldn’t accept the IPv4 address from Firewalla. I had to set it to DHCP with manual allocation to get it to receive an IPv4 from Firewalla. Reinstalled the OS on Firewalla. Worked normally, then all the sudden IPv6 addresses again. I’m using FWG Plus (mine says Professional), and I’m on the beta software.

0

• 

  FirewallaSupportDesk

  • September 04, 2026 01:26

  Do you have IPv6 enabled on your LAN/WAN? Please disable them if you don't need it. 
  
  What's the IPv6 Addresses your devices get? Are they link local IPv6 IPs starting with "FE80::"? 

  0

  Comment actions Permalink
• 

  Joel Warne

  • September 04, 2026 03:30

  Yes, but they’ve always been on and it hasn’t done this. Also, it has always given itself used 10.0.0.0/24 for its subnet. All the sudden it’s using 192.168.0.0/16. And it’s not like it’s using 192.168.0.1. It’s using bizarre IPs for itself, like 192.168.15.1.

  Earlier, when I forced back into the 10.0.0.0/24 range, it left the devices in that range but reset its own IP for 10.0.10.1.

  0

  Comment actions Permalink
• 

  Joel Warne

  • September 04, 2026 03:31

  I’ll give you the IPv6 numbers in a bit. I am reinstalling the OS.

  0

  Comment actions Permalink
• 

  Joel Warne

  • September 04, 2026 03:43

  I’m having an issue where the app is getting stuck at “exchanging keys for app access” and not proceeding. Resetting network settings to see if it helps.

  0

  Comment actions Permalink
• 

  FirewallaSupportDesk

  • September 04, 2026 03:44

  Do you still have 10.0.0.0/24 range configured on your Firewalla LAN while seeing devices get an IP from 192.168.0.0/16? If so, sounds like you may have another DHCP server running in the network that's handing out IPs from 192.168.0.0/16. I'd suggest check your network set up and how are things physically connected. 

  0

  Comment actions Permalink
• 

  Joel Warne

  • September 04, 2026 03:58

  So, as an example, I can’t access Firewalla app. It was getting stuck at exchanging keys, reset the network and privacy settings, now it advanced to verifying app access where it gets stuck. But Firewalla is online and handing out IP addresses.

  It gave my MacBook 192.168.46.220, my tv another IP in that range, and the DNS server is 10.0.0.1. It’s weird.

  All I have is an Xfinity XB8 in bridge mode. So I don’t know where the rogue DHCP server could be.

  0

  Comment actions Permalink
• 

  Joel Warne

  • September 04, 2026 04:13

  I’m resetting the Xfinity modem and putting it back in bridge mode. I’ll hopefully get in soon.

  0

  Comment actions Permalink

Please sign in to leave a comment.