So I did some more investigation. I had missed that I needed to use /renew6 and /release6 before.


Now I have 10 minute lease time.

5 minutes into the lease time, I can /renew6 the lease successfully and get 10 more minutes leasetime.

around 2-3 minutes before the lease-time expires I see that Win10 has marked the IA_NA as (deprecated), I try to do "/renew6" I get the following error:

"An error has occured while renewing interface Ethernet: The semaphore timeout period has expired".

This renew fails. If I now ctrl-c this /renew6 and run /renew6 again, the renew succeeds and the address is back again as (preferred) and the lease time is 10 minutes.

I also have a Ubuntu 16.04 box that won't keep its lease either... so I don't know what's going on. Will look further.

Harald, what DHCPv6 server are you using?

--
Mikael Abrahamsson    email: swm...@swm.pp.se

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