Na tom prvnim RB (192.168.1.1/24) musis mit nastavene routy:
ip route add 192.168.2.0/24 gateway=192.168.1.2
ip route add 192.168.3.0/24 gateway=192.168.1.2
ip route add 192.168.4.0/24 gateway=192.168.1.2
ip route add 192.168.5.0/24 gateway=192.168.1.2
Pak vypnes maskaradu na 1.2 a mel by jsi videt vsechny IP z tech rozsahu na 1.1