RouterOS 重新拨号后，从接口获得新ip并更新规则

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:global ipaddr [/ip address get [/ip address find interface=pppoe4plex] address]
:set ipaddr [:pick $ipaddr 0 ([len $ipaddr] –3)]
:global oldip [/ip firewall nat get [/ip firewall nat find comment=“plexdstnat”] dst-address]
:if ($ipaddr != $oldip) do={
:log info [/ip firewall nat set [/ip firewall nat find comment=“plexdstnat”] dst-address=$ipaddr]
:log info [/ip firewall nat set [/ip firewall nat find comment=“plexsrcnat”] to-addresses=$ipaddr]
}