/ip firewall nat
add action=redirect chain=dstnat comment="Forwarding DNS" dst-port=53 \
in-interface-list=LAN protocol=udp to-ports=53
--
/ip firewall nat
add action=redirect chain=dstnat comment="Forwarding DNS" dst-port=53 \
in-interface=bridge1 protocol=udp to-ports=53
--
若ＤＮＳ設在ＤＨＣＰ裡頭時，則變成．
/ip firewall nat
add action=redirect chain=dstnat comment=\
"Redirect Clients DNS Traffic to Router DNS" dst-port=53 protocol=udp \
to-port=53
