EoIP problem

I have 2 routers R1 and R2 which are connected via EoIP tunnel using bridges over ISP network. All connection is working as a transparent bridge, all is good.

The problem is R1 has three interfaces and works as a router to whole network. Half of o network near R1 sees Inet. Half near R2 - not. Ping and traceroute are working, but sites aren’t opening.

The NAT rule on R1 makes SNAT for whole network 192.168.1.0/24.

FriedricH, make sure that all hosts are having correct IP address, gateway and DNS configuration, as well SRC-NAT rule matches all of them.