I am using RADVD to assign IPv6 addresses. It works for 'static' devices.

I want it to work for devices that move to different networks without having to restart the network on those devices. So if I have a notebook on network Lab1 getting prefix 2607:7:4:1::64 and moves to network Lab2 where RADVD advertises prefix 2607:7:4:2::/64, I want the host to switch to the new address. This is NOT for MobileIP.

Right now I get the new global address, but the old address never goes away. I have tried setting AdvPreferredLifetime, but that has not helped.