If they duplicated the subnet, the firewall shouldn't have accepted it. If it did, then it was likely bridging two subnets. If the ISP legitimately wanted to use that RFC1918 subnet, this would still ...
How to statically address a Windows 2008 / Windows 2008 R2 Server How to statically address a Windows 7 Client System How to setup DNS for IPv6 on a Windows 2008 R2 ...
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