IPv6 connectivity problems...

[frittentheke]

@ranpha

My suggestion for Mikrotik is to force the depreciation of the older IPv6 address in the client’s computer by sending a RA with prefered-lifetime and valid-lifetime of zero seconds for that stale prefix if routerOS detects that the prefix has changed. This would be valueable for those customers whose ISP only gives out dynamic IPv6 prefixes.

This is, at least according to RFC6204 not optional. See my post here … http://forum.mikrotik.com/t/deprecating-old-ipv6-prefix-when-removed-or-replaced-rfc6204/66526/1