IPv6 dhcp-client problem on PPPoE link

Hello,
I’m trying to make dhcpv6 client working on a PPPoE link.
mikroti DHCPv6 client is requesting address (IA_NA) and prefix (IA_PD)

My problem is that when the PPPoE connection is turned of / turned on for any reason (disabling / enabling PPPoE connection on mikrotik; turning off/on the modem, …), the mikrotik DHCPv6 client sends a RENEW. As the lease does not exist anymore on the LNS (cisco), renew is never answered, and IPv6 connection does not work.

If I do a RELEASE / RENEW on mikrotik dhcpv6-client, it works just fine.

Is that a normal behavior ?
Shouldn’t the mikrotik send a SOLLICIT when PPPoE sessions comes back ?
Regards,
Cédric

It is a bug… it has been mentioned before and it appears some fixes have been trief but as you rightly indicate it still does not work.