Both interim blocks are in cnx-network b2b5daa:
- 27c697a adds vlans.<name>.ipv6SubnetId (lan -> 0, others -> VLAN id),
replacing the SubnetId=auto race the mkForce pins worked around. mgmt
moves from 0x1 to 0xA; on AIS's bare /64 both are skipped alike.
- 45643d6 is the router-radv-deprecate unit this file carried a copy
of. Keeping both concatenated the two scripts into one unit running
two ip-monitor loops.