The subnet 192.168.2.0 to 192.168.2.7 is 192.168.2.0/29 i.e. the netmask is 255.255.255.248, not 255.255.255.255. In 192.168.2.0/29 192.168.2.0 is the network address i.e. not a valid host address.
subnet routing
You have to find out whether your ISP is routing 192.168.2.0/29 to an IP outside that range (e.g. 192.168.1.25) or whether the uplink IP is within that network. If the subnet is routed then you do not need any IP from it on that interface.