I've had quite a bit of experience with using Mikrotik as a NAT/SOHO device but I'm now involved in a project that requires that (at least part of) my configuration is more of a true router, with the addition of IPV6 on top of the equation. I'm having a little more of a problem wrapping my head around the concept than I anticipated so I'm hoping someone can give me a quick rundown on how to accomplish what I need. I'm sure I've way over-complicated it in my head which is what has gotten me totally confused. The router in question is an RB493G.
The provider has provided the following addresses for the point-to-point link (all subnets shown in example are fictitious to protect the innocent and/or confused but the IP address (last octet) and CIDR/netmasks are valid)....
188.8.131.52/30... .33 is their router's IP and .34 is my router IP
2001:1:1:1::/126... ::1 is their router's IP and ::2 is my router IP
They have statically routed IP blocks to me as follows...
184.108.40.206/27 to 220.127.116.11
2001:2:2::/48 to 2001:1:1:1::2
The provider's link will connect to ether1. Ether2 will connect to an external switch (Switch1) and be used for LAN (NAT, firewall, etc...LAN IPs will likely be 10.0.0.0/22 or 10.0.0.0/24). Ether3 will connect to an external switch (Switch2) for servers directly on the public internet.
The IPV4 /27 ip block needs to be split into two /28's one of which will serve as the public IP's for the NAT network on ether2 and the other one routed out ether3 to be used by whatever public devices connect to that switch. Likewise the IPV6 /48 block needs to be split up with one /64 block routed to the LAN (ether2) and the remainder of the subnets to routed to the switch on ether3
All hints, pointers, examples are greatly appreciated.