While trying to read a WWW page from a site mentioned
in Slashdot I noticed that it was only intermittently
accessibile, so I executed a traceroute to it just out
of curiosity and saw something that seems very weird.
The corresponding RFC says:
>3. Private Address Space
>
> The Internet Assigned Numbers Authority (IANA) has reserved the
> following three blocks of the IP address space for private internets:
>
> 10.0.0.0 - 10.255.255.255 (10/8 prefix)
> 172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
> 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
>
> We will refer to the first block as "24-bit block", the second as
> "20-bit block", and to the third as "16-bit" block. Note that (in
> pre-CIDR notation) the first block is nothing but a single class A
> network number, while the second block is a set of 16 contiguous
> class B network numbers, and third block is a set of 256 contiguous
> class C network numbers.
...and yet if I say "traceroute www.systemlogic.net" I see
the following (notice the line numbered 10):
[...deletia...]
4 gigabitethernet6-0-136.hsipaccess2.Boston1.Level3.net (63.211.178.25) 4.911 ms
4.632 ms 4.673 ms
5 so-5-0-0.mp1.NewYork1.Level3.net (209.247.9.230) 10.486 ms 10.429 ms 10.258 ms
6 so-5-0-0.mp1.NewYork1.Level3.net (209.247.9.230) 9.955 ms 9.899 ms 9.903 ms
7 pos8-0.core1.NewYork1.Level3.net (209.247.10.34) 10.001 ms 15.719 ms 18.004 ms
8 63.211.54.74 (63.211.54.74) 15.937 ms 21.690 ms 14.926 ms
9 pairnet-1.uspitb.savvis.net (209.83.160.130) 28.220 ms 28.110 ms 28.104 ms
10 192.168.1.6 (192.168.1.6) 28.595 ms 30.362 ms 31.889 ms
11 216.92.21.243 (216.92.21.243) 29.577 ms 28.350 ms 31.694 ms
Isn't it borken for that site to have an address in the 192.168.* range?
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