I’ve seen another problem with the DHCPv6-Client in 6.34 and Prefix Delegation. The “prefix-hint” doesn’t appear to be functioning correctly.
I was bringing up a new router and have “prefix-hint=::/60” configured. I only received a /64 from the provider (that being the default, if a hint is not sent by the client). I downgraded the router to 6.33.5, with no configuration changes, and received the proper /60.
If/when given the opportunity, I will do a packet capture and see if the hint is being sent at all in 6.34.
Anybody else seen this? I suspect it only occur on a new install. If you already have a longer prefix lease and are just renewing, I suspect it will continue to renew.