From: Janet Pippin <jdp@cyberramp.net> To: nanog@merit.edu Cc: Larry Rosenman-CyberRamp System Administration <ler@cyberramp.net> Subject: 10.0.0 Date: Friday, May 30, 1997 10:53 PM
ALL: Upon trying to discover an abuse site's network location, I happened upon this:
Now, first it goes to sierra.. Then right after the trace finishes, I ran the second one..
traceroute to ns1.sierra.net (207.135.224.247), 30 hops max, 40 byte
I've noted several providers, including a couple of better-known ones, using RFC1597 addresses internally. While not a Really Optimal Solution, it does work, and if you find yourself with only a couple of class C's to work with.. I'd probably rather preserve them for my customers, and go with whatever I had to internally, as long as packets still got from A to B. The only services that should be affected by the use of such "bogus" addresses will be traceroute and any routing information passed by the device. Much more interesting is when you have to connect to several different customers, many of whom have chosen 10/8, 172.16/16, or 192.168.1/24 as their core network addresses. Looks like Sierra is a customer of Phoenix Fiberlink, who is likely dual-homed, since he's got a Sprint netblock transiting UUnet. Hope that helps. ---------- packets
1 cisco.cyberramp.net (207.158.64.1) 2 ms 1 ms 1 ms 2 166.48.80.9 (166.48.80.9) 6 ms 8 ms 13 ms 3 core3.Dallas.mci.net (204.70.4.13) 5 ms 7 ms 16 ms 4 uunet-hssi.Dallas.mci.net (206.157.77.130) 26 ms 7 ms 56 ms 5 Fddi0-0.CR1.DFW1.Alter.Net (137.39.37.35) 103 ms 13 ms 15 ms 6 108.Hssi5-0.CR1.SFO1.Alter.Net (137.39.70.221) 135 ms 312 ms 348 ms 7 133.Hssi4-0.GW1.SLT1.Alter.Net (137.39.68.10) 104 ms 121 ms 122 ms 8 pfi-gw.customer.ALTER.NET (137.39.167.18) 108 ms 171 ms 106 ms 9 207.49.13.50 (207.49.13.50) 114 ms 117 ms 112 ms 10 207.14.235.22 (207.14.235.22) 112 ms 116 ms 113 ms 11 10.0.0.2 (10.0.0.2) 116 ms 108 ms 114 ms 12 rock.sierra.net (207.135.224.247) 116 ms 112 ms 113 ms
jdp@mailhost 18 ~ > wi 10.0.0 IANA (RESERVED-6)
Netname: RESERVED-10 Netnumber: 10.0.0.0
hrmm... and the second one:
jdp@mailhost 17 ~ > t ns1.sierra.net traceroute to ns1.sierra.net (198.60.22.2), 30 hops max, 40 byte packets 1 cisco.cyberramp.net (207.158.64.1) 2 ms 1 ms 1 ms 2 166.48.80.9 (166.48.80.9) 29 ms * 5 ms 3 bordercore1-loopback.Denver.mci.net (166.48.92.1) 210 ms 252 ms 281 ms 4 electric-light.Denver.mci.net (166.48.93.254) 274 ms 273 ms 260 ms 5 F0-0.slkcib01.eli.net (207.0.56.18) 59 ms 59 ms 62 ms 6 XMISSION-DOM.slkcib01.eli.net (207.49.20.86) 64 ms 67 ms 69 ms 7 xmission.xmission.com (198.60.22.2) 60 ms * 88 ms jdp@mailhost 18 ~ >
enlighten me, someone... :(
-janet
Janet Pippin * CyberRamp Internet Services Network Administrator *** 11350 Hillguard Road jdp@cyberramp.net * Dallas, Texas 75243-8311 http://www.cyberramp.net * (214) 340-2020 (817) 226-2020