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Thread ID: 51915 2004-12-03 04:17:00 Internal (192.168.x.x) address in the middle of a route to a site george12 (7) Press F1
Post ID Timestamp Content User
299350 2004-12-03 04:17:00 Hi, I am extremely curious as to why a certain phenomena occurs whenever I trace the route to any IP address.

C:\Documents and Settings\George>tracert pressf1.pcworld.co.nz

Tracing route to forums.pcworld.co.nz [210.48.100.45] from 10.2.0.17
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms Request timed out.
2 72 ms 75 ms 77 ms 210-55-64-32.adsl.netgate.net.nz [210.55.64.32]
3 73 ms 67 ms 75 ms 192.168.253.1 <-- What the hell?
4 97 ms 93 ms 93 ms 202.50.119.153
5 90 ms 87 ms 71 ms iconz1.ape.net.nz [192.203.154.44]
6 78 ms 93 ms 89 ms ae-01a.akl.iconz.net [202.14.100.20]
7 75 ms 87 ms 87 ms e0-0.core3.akl.iconz.net.nz [202.14.100.220]
8 83 ms 87 ms 81 ms ip-210-48-113-34.iconz.net.nz [210.48.113.34]
9 85 ms 83 ms 75 ms ip-210-48-100-45.iconz.net.nz [210.48.100.45]

Trace complete.

Now, what on earth is 192.168.253.1, an "unroutable" address, doing here? I do not use this range on my network, and it is past my network anyway. How could such an address function in the internet?

I can ping it just fine too. But how can it route properly? Being "unroutable" and all...

I know I posted this in Chill's thread but I thought this would be better than bumping it when it is OT to the thread anyway.

Cheers George :)
george12 (7)
299351 2004-12-03 04:20:00 In fact, out of pure curiosity - can somebody please traceroute me (use www.jgi.co.nz for the address) and post it in here? I would like to know if others see this address to on the route to my server.

Cheers
george12 (7)
299352 2004-12-03 04:20:00 It's part of the magic which makes the Internet work. Someone needed that incantation.

Why worry about it?
Graham L (2)
299353 2004-12-03 04:23:00 Because it annoys me. If I don't know how something works, and it confuses me, I need to find out what is up with it.

It's called curiosity.
george12 (7)
299354 2004-12-03 04:28:00 222.152.55.106 (Reverse lookup failed)

1 203.79.116.1 11.291 ms 13.203 ms 8.978 ms
2 203.98.23.41 12.072 ms 13.847 ms 9.238 ms
3 203.98.21.37 32.134 ms 29.703 ms 21.228 ms
4 203.98.18.67 23.667 ms 25.561 ms 27.275 ms
5 203.96.120.177 20.885 ms 29.787 ms 19.528 ms
6 203.96.120.30 23.669 ms 23.565 ms 23.388 ms
7 202.50.119.154 262.688 ms 42.012 ms 351.570 ms
8 192.168.253.12 30.699 ms 38.461 ms 36.433 ms
9 222.152.55.106 95.937 ms 101.942 ms 98.210 ms
Gorela (901)
299355 2004-12-03 04:30:00 192.168.253.12 - Yep its there. There must be something wrong with my understanding of networks.

Guru, please explain!
george12 (7)
299356 2004-12-03 04:35:00 It's part of someone's (an ISP?) internet which routes their Internet traffic. It seems logical to me that someone might have a router which accepts ADSL subscribers from the telephone exchange hardware, and passes their stuff through an internal internet, then out through a number of routers to the Internet. It probably shouldn't be visible, (and certainly it shouldn't be pingable) but ...

The 253.1 number is typical for a router ... and I note the backwards one is 253.12 ... so maybe they have a fair number of routers talking to their fast Internet backbone llinks.
Graham L (2)
299357 2004-12-03 04:43:00 In the end of the day it doesn't matter, as long as it is unique on the internet - no one's going to care if someone behind a NAT device address can't access it.

The only time it will matter is if someone with the same IP Address is directly connected to the internet (no NAT) - because then there is a conflict and someone should be concerened.
Growly (6)
299358 2004-12-03 04:47:00 > as long as it is unique on the internet

But how could an address like 192.168.x.x be unique. I know personally several people using this exact address! All behind NAT of course, but the point remains, surely some other router in the world does the exact same thing. Then somebody pings 192.168.253.1 - and DAMN - what does the router do? Send it to his buddy 20m away (192.168.253.1) or that random router in Bangladesh or something.

I don't think the IANA or whoever gives out 192.168s...
george12 (7)
299359 2004-12-03 04:58:00 I was wrong. Growly kindly explained to me on MSN. I understand it all now :). Thanks Graham L too. george12 (7)
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