@Virgo hi, LAN interface with public ip should working as a switch, with gateway on WAN interface. There's no need to add static route, standard routing from LAN to WAN will be fine.

@levarek Yes, that is the plan. In my configuration i use LAN port with public address to WAN port another router with One-To-One NAT load balance with another one connection as a spare.

Hello, i bought ER7206 as a router that will be connectet between i DSL modem (with static IP), and second router, also with static IP. COnfiguration looks like that DSL Modem ->> WAN port ER7206...