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OK, this isn't really a server question in practice, but I'm pretty sure it has something to do with server management. What is this joke supposed to mean?:

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closed as off topic by Warner, splattne May 29 '10 at 20:12

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up vote 10 down vote accepted

192.168/16 is a private block of IPs that aren't routable on the Internet. It means that the killer was inside the house!!!

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Oh, they mean it as in 192.168.*.*? OK, I get it now! – Kudu May 29 '10 at 16:17
Yes, the /16 is CIDR notation, it means a 16 bit netmask, or – MDMarra May 29 '10 at 16:19
If you're not familiar with CIDR notation, read this, it helped me: – Kudu May 29 '10 at 16:26

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