I have one IP xx.xx.xx.122/29 on eth1.
how to transfer internet to eth6 with IP address xx.xx.xx.123/29 so I can put some server there?
same question here:
http://forum.mikrotik.com/t/different-public-ip-in-each-ethernet/57996/1
Give some more explanation.
What router board.
What do you want to do?
So you have more chance that someone can help you.
you can check the link I have in my post. that guy has the exact same problem as I do.
Im going to assume you want the routerOS to assign public ip to your server.
What you do is create a bridge/switch between your server port and eth1.
create a dhcp server that assigns that 1 single ip address only to eth6 and do not give eth6 that ip address, instead assign the ip address on eth1 to the bridge.
Than your server should now be directly connected to the internet with a public ip. If you want to use firewall from routerboard on traffic than make sure you used bridge.
You are assuming good. 
I’ve used this guide (part of it) and will test it in a few days.
help?
this is why its important to provide more information so that i dont always have to assume even though my assumptions can be accurate.
Ofcourse you can bridge PPP
Even add the address details. In your case it would be a public ip pool with static bindings.
solution: put eth1 (wan /29 input) in bridge with the port you want to put server and add one IP address to that bridge instead of eth1 (leave eth1 without IP) . Add next address from /29 input to your server.
SystemErrorMessage thanks for your help