IPv6 with the HP AP420

I use an HP AP420 wireless access point at the office and a few other locations. Although certainly not as cheap as a low end Linksys, they’re probably some of the most reliable ones I’ve used and can be found on eBay these days for a great price.

I did have one problem: it didn’t seem to be passing IPv6 router advertisements (RA) and thus autoconfig would not work. I finally discovered the culprit today: the “AP Management Filter” must be set to “disabled”. With it enabled it was apparently filtering IPv6 RAs. Since I am using a management VLAN this setting was pointless in my environment, but I thought I should document this potentially obscure problem in case anyone else happens across it.