Private Address in traceroute

+2 votes

Hey guys,

So is anybody else seeing a private address space when doing a traceroute to a website?surprise

Decided to check when I couldn't access the Steam store and noticed that after the Neotel (41.164.52.40) hop there is a private address 172.18.1.162. Guess I won't be buying any Steam games tonight crying

>tracert store.steampowered.com

Tracing route to store.steampowered.com [96.16.222.134]
over a maximum of 30 hops:
 
  1     8 ms     4 ms     3 ms  Home [192.168.20.1]
  2     *        *        *     Request timed out.
  3    34 ms    28 ms    29 ms  cpt-rx2.ip.adsl.co.za [169.1.5.82]
  4    41 ms    41 ms    65 ms  cpt-net1.ip.adsl.co.za [169.1.5.128]
  5    28 ms    30 ms    28 ms  41.164.52.40
  6    50 ms    50 ms    49 ms  172.18.1.162
  7     *        *        *     Request timed out.
  8     *        *        *     Request timed out.
 
asked May 13, 2016 in ADSL by Stodgy_Noodle (140 points)
edited May 13, 2016 by Stodgy_Noodle

1 Answer

0 votes
Everyone is seeing this.  Neotel could use public IP's for their routers, but the only actual advantage in that is that they can get assistance on these routers from people outside their network.  The routers work just as well whether they have a real or a slightly fake IP address.
answered May 20, 2016 by Bananaman (5,390 points)
Understandable however, it was my understanding that in an ISP you would block RFC 1918 address space. It is not common practice to see a private address space on a public link regardless.
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