Finally?
*) dhcpv6-relay - add routes for bindings passing through relay;
I tried, but I couldn’t get it to work.
Test configuration (all 7.18beta2 virtual CHR OVA):
Client - Relay - DHCPv6 server
There is a row added in the routing table on Relay, but ping is not working.

Client

Can someone provide a working sample configuration?
Client:
/interface bridge add name=bridge1
/ipv6 address add address=::1 from-pool=LAN6 interface=bridge1
/ipv6 dhcp-client add add-default-route=yes interface=ether3 pool-name=LAN6 rapid-commit=no request=prefix
Relay:
/ipv6 address add address=2a07:9280::2 advertise=no interface=ether2
/ipv6 dhcp-relay add dhcp-server=2a07:9280::1 interface=ether3 name=relay1
/ipv6 nd set [ find default=yes ] managed-address-configuration=yes other-configuration=yes
DHCPv6 server
/ipv6 dhcp-server add address-pool=pool1 interface=ether2 lease-time=10s name=server1 prefix-pool=pool1
/ipv6 pool add name=pool1 prefix=2a06:9280::/56 prefix-length=60
/ipv6 address add address=2a07:9280::1 advertise=no interface=ether2
/ipv6 nd set [ find default=yes ] managed-address-configuration=yes other-configuration=yes
ping from relay to 2a06:9280::1 doesn’t work.