Version 6.39rc7 has been released. Changes since previous rc: *) dhcpv6-client - fixed dhcpv6 rebind on startup; Rebinding or renewing? And only on startup? However, the new version solves my problem at least partially. As I have already described in this thread , DHCPv6 is broken for me since v6.3...

Version 6.39rc7 has been released. Changes since previous rc: *) dhcpv6-client - fixed dhcpv6 rebind on startup; Rebinding or renewing? And only on startup? However, the new version solves my problem at least partially. As I have already described in this thread , DHCPv6 is broken for me since v6.3...

DHCPv6 still not working as expected. http://fs5.directupload.net/images/160929/usjpvkvh.png My ISP enforces all 24 hours a disconnect. IPv4 address and IPv6 prefix is dynamic, but it takes 20 minutes until a new prefix is obtained. Last working Router OS was v 6.33.6. More details here: http://foru...

Version 6.37rc34 has been released, Changes since 6.37rc32: *) dhcpv6 - improved interface status tracking; DHCPv6 still does not work like before v 6.33.6. If a disconnect occurs, DHCPv6 stays for 10 minutes in state renewing and for another 10 minutes in state rebinding. It takes exactly 20 minut...

In version v6.35.4 dhcp-v6 client with prefixes started working in my router :) What do you mean with "started working"? The DHCPv6 client works since ages, but not anymore in networks with dynamically assigned prefixes. Does your provider enforce a disconnect every 24 hours? Do you get a...

Any confirmation about this issue would be much appreciated. 
I  doubt I'm the only one who uses Mikrotik routers in networks with dynamically assigned IPv6 prefixes.

A few more thoughts at this topic. Patch 6.34 has introduced a few changes regarding to the DHCPv6-client. Since then the client does no longer work as expected. After a connection lost on WAN side, the DHCPv6-client tries a renewing attempt followed by a rebinding attempt.  Each attempt takes exact...

Excerpt from RFC6204 / RFC7084: Basic Requirements for IPv6 Customer Edge Routers 4. Requirements 4.1.  General Requirements G-5:  By default, if the IPv6 CE router is an advertising router and         loses its IPv6 default router(s) and/or detects loss of         connectivity on the WAN interface ...

The problem was described in several posts within this thread in February 2016 and the last working version was v 6.33.6. The last tested version is 6.36.rc28 but without success. Hardware is RB751G-2HnD. The German ISP 1&1 delivers dual stack IPv6 with dynamically IPv6 prefixes over DHCPv6. The...

Regarding the two posts before about IPV6, Dualstack with Carrier "T-Online/Deutsche Telekom" is running fine here. No Problems, so I can´t confirm it . Hardware used is RB2011UiAS-2HnD with Vigor 130 in modem-mode. Regards.......Detlef My configuration is very similar. Vigor 130 in PPPoE...

There seems to be an issue with the DHCPv6-Client. In a dual stack environment with dynamical IPV4 and dynamical IPV6-prefix, the client hangs in status "renewing", after a reconnect to the ISP is established, regardless if the reconnection is initiated from the ISP or from the router itse...