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    #/etc/iproute2/rt_tables ´ËÎļþ´æÓÐlinux ϵͳ·ÓɱíĬÈϱíÓÐ255 254 253ÈýÕűí
      255  local ±¾µØÂ·ÓÉ±í ´æÓб¾µØ½Ó¿ÚµØÖ·£¬¹ã²¥µØÖ·£¬ÒѼ°NATµØÖ·.
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      254  main Ö÷·ÓÉ±í ´«Í³Â·Óɱí,ip routeÈôûָ¶¨±íÒà²Ù×÷±í254.Ò»°ã´æËùÓеÄ·ÓÉ..
           ×¢:ƽʱÓÃip ro sh²é¿´µÄÒàÊǴ˱íÉèÖõÄ·ÓÉ.
      253  default  ĬÈÏ·ÓɱíÒ»°ã´æ·ÅĬÈÏ·ÓÉ...
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      #ip route list table table_number
      #ip route list table table_name
    ·ÓɱíÌí¼ÓÍê±Ï,¼´¿ÉÔÚ²ßÂÔ·ÓɱíÄÚÌí¼Ó·ÓÉÀý:
      #ip route add 192.168.1.0/24 dev eth0 via 192.168.1.66 realm 4
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      #ip route add default via 192.168.1.1 table int1
      #ip route add 192.168.1.0/24 via 192.168.1.1 table int2
      #ip route add 172.16.0.2/16 via 172.16.0.1 table int3
        ×¢:¸÷·ÓɱíÖÐÓ¦µ±Ö¸Ã÷ĬÈÏ·ÓÉ,¾¡Á¿²»»Ø²é·Óɱí.·ÓÉÌí¼ÓÍê±Ï,¼´¿ÉÔÚ·ÓɹæÔòÖÐÓ¦ÓÃ..
    #ip rule sh ÏÔʾ·ÓɹæÔò
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