Over time, it seems that Xfinity moved regions to receive their DHCPv6 addresses from a server with a real address rather than a link-local address. The default firewall rules in OpenWRT have been fixed, but if you are running an older OpenWRT version, or you copied your firewall rules from an older version, you might need to fix this manually.

Find the rule called “Allow-DHCPv6” and remove any source and destination IP restrictions. Save and reload the firewall. That’s it.

This entry was posted on Saturday, December 6th, 2025 at 21:10 and is filed under Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.