IPv6 disconnects after 1 minute on some LAN clients (pfSense Plus 24.11)
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Hello everyone,
I'm currently running pfSense Plus 24.11-RELEASE (amd64) and I'm facing an issue with IPv6 connectivity.
Right after a device connects to the LAN, it successfully gets an IPv6 address via DHCPv6 and IPv6 works — but after about 1 minute, the connection drops on some PCs. Meanwhile, other PCs on the same LAN segment continue to work fine with stable IPv6 connectivity.
The strange part is that some devices stay connected with no issues, and others always drop after ~1 minute.
Has anyone encountered a similar issue, or does anyone have suggestions on what might be causing this or how I could further troubleshoot it?
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What is the difference between the device/PC that IPV6 works on and the ones that don’t? I would start with looking at the IPV6 settings on the devices/PCs that are having problems. I’m going to guess that your router advertisements are managed. Try stateless DHCP advertisements and see if that solves your problem.