Hello groups,
 
I'm using NAT on Cisco 3000 running ios 12.1.  I also using NAT Static to mapping port. (i.e ip nat inside source static tcp 10.0.0.254 80 64.x.x.x 80 ).  It works fine... but sometime when I reboot computer have ip 10.0.0.254 and computer display IP conflict error (its showing MAC address conflict with...which is my ethernet interface on Cisco 3000).  I have to restart/reboot the router and the conflict disappear.... But sometime it happen again when I reboot my computer.
 
Already tried:
1) I ugrade from version 11.3 to 12.1 still get same error.
2) Map IP NAT Static to different computer (or IP address) and running computer that have map IP on router, still get exactly error.
 
Any solution with IP NAT Static ?
 
Thanks

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