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  eth0 ΪLAN¿Ú£¬IPΪ LAN_IP = 192.168.0.1 
  eth1 ΪµÚÒ»¸öWAN¿Ú£¬½ÓµçÐÅÏß·£¬IPΪ CTC_IP£¬Íø¹ØÎª CTC_GW
  eth2 ΪµÚ¶þ¸öWAN¿Ú£¬½ÓÍøÍ¨Ïß·£¬IPΪ CNC_IP£¬Íø¹ØÎª CNC_GW

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  ΪÁË·½±ã£¬ÎÒÃÇÔö¼Ó2¸ö²ßÂÔ·ÓÉ±í£¬µçÐÅ => 100£¬ÍøÍ¨ => 200£¬ÕâÑùÔÙÌí¼Ó¹æÔòʱ£¬¾Í¿ÉÒÔÖ±½ÓÓÃ×Ô¶¨ÒåµÄÃû³ÆÀ´Ìæ´úÊý×Ö

  echo "100 ctc"¡¡>> /etc/iproute2/rt_tables
  echo "200 cnc" >>¡¡/etc/iproute2/rt_tables

  1£©ÉèÖÃĬÈÏ·ÓÉ£¨µçÐÅ£©
  ip route replace default via µçÐÅÍø¹Ø dev eth1

  2£©¶ÔÍøÍ¨½øÐлùÓÚÄ¿µÄµØÖ·µÄ²ßÂÔ·ÓÉ
  ip rule add to ÍøÍ¨Â·Óɱí1 table cnc prio 100
  ip rule add to ÍøÍ¨Â·Óɱí2 table cnc prio 100
  .... 

  3£©Ìí¼Óԭ··µ»ØÂ·ÓÉ

  ip route flush table ctc
  ip route add default via µçÐÅÍø¹Ø dev eth1 src µçÐÅIP table ctc
  ip route add 192.168.0.0/24 dev eth0 scope link src 192.168.0.1 table ctc
  ip rule add from µçÐÅIP table ctc

  ip route flush table cnc
  ip route add default via ÍøÍ¨Íø¹Ø dev eth2 src ÍøÍ¨IP table cnc
  ip route add 192.168.0.0/24 dev eth0 scope link src 192.168.0.1 table ctc
  ip rule add from ÍøÍ¨IP table cnc



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