ip firewal mangle
add chain=forward out-interface=pppoe-out1 protocol=tcp dst-port=!1863 tcp-flags=syn \
action=change-mss new-mss=1380 comment="MSN melhor" disabled=no
add chain=forward out-interface=pppoe-out1 protocol=tcp dst-port=!5190 tcp-flags=syn \
action=change-mss new-mss=1380 comment="" disabled=no