olha as regra ai

/ ip address
add address=192.168.1.254/24 network=192.168.1.0 broadcast=192.168.1.255 \
interface=bridge1 comment="" disabled=no
add address=10.0.0.1/24 network=10.0.0.0 broadcast=10.0.0.255 interface=speedy \ comment="" disabled=no

eu pingo o 10.0.0.1 mas nao pingo o 10.0.0.138 do modem, mas se der telnet pelo winbox funfa