Windows 7 and IPv6

I was presented with a particular problem (DHCPv6 and Windows 7) and had to do some learning.

Practical IPv6 for Windows Administrators by Ed Horley was VERY helpful.

So the things to remember

Temporary addresses WILL be formulated if either:

a) The A flag is ON in Router Advertisements. To turn the A flag off, use the command

ipv6 nd prefix [applicable prefix/cidr] no auto-config

on the advertising interface

b) Privacy extensions are enabled on the windows machine. To turn them off, use the commands

netsh interface ipv6 set privacy state=disabled store=active
netsh interface ipv6 set privacy state=disabled store=persistent

This only turns off temporary addresses, NOT the randomized identifiers. To turn those off, use the commands

netsh interface ipv6 set global randomizeidentifiers=disabled store=active
netsh interface ipv6 set global randomizeidentifiers=disabled store=persistent

 

Leave a comment