While perusing BGP accountments today

Mailman List Mirror (Read Only)
1

*> 2.52.228.144/32 209.83.160.97 0 6347 1239 i

Wee?

not to be superstitious, but doesn't sprint own the mirror image of the
about (144.228.x.x)?

1 nac-chq1-e0-0 (209.123.20.251) 6.556 ms 4.507 ms 4.913 ms
2 nac-nyc6-s3-2 (209.123.11.222) 208.609 ms 46.004 ms 52.967 ms
3 nac-brd1-h0 (209.123.11.190) 21.686 ms 7.134 ms 8.227 ms
4 GA0F8B.GR-1.NycmNY.savvis.net (209.83.160.97) 38.873 ms 21.764 ms 28.229 ms
5 sl-gw12-pen-10-0-T3.sprintlink.net (144.228.165.13) 19.487 ms 69.539 ms 63.810 ms
6 sl-bb10-pen-2-3.sprintlink.net (144.232.5.85) 19.669 ms 14.627 ms 20.308 ms
7 sl-bb7-pen-0-0-0.sprintlink.net (144.232.5.54) 19.116 ms 28.941 ms 54.179 ms
8 sl-bb5-chi-1-0-0.sprintlink.net (144.228.10.38) 93.912 ms 43.670 ms 54.402 ms
9 sl-bb12-chi-0-2.sprintlink.net (144.232.0.169) 41.690 ms 30.253 ms 108.610 ms
10 sl-bb2-chi-4-0-0.sprintlink.net (144.232.0.142) 60.862 ms 52.579 ms 38.913 ms
11 144.228.252.11 (144.228.252.11) 45.391 ms 50.220 ms 85.955 ms
12 sl-paterno-2-0-128k.sprintlink.net (144.228.52.2) 167.325 ms 55.033 ms 76.683 ms
13 sl-gw11-chi-9-1-TS5-128k.sprintlink.net (144.228.52.1) 70.834 ms 123.828 ms 77.876 ms
14 sl-paterno-2-0-128k.sprintlink.net (144.228.52.2) 58.633 ms 57.476 ms 61.027 ms
15 sl-gw11-chi-9-1-TS5-128k.sprintlink.net (144.228.52.1) 59.639 ms 53.384 ms 49.821 ms

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   ISPF, The Forum for ISPs by ISPs. October 26-28, 1998, Atlanta, GA.
    Three days of clues, news, and views from the industry's best and
    brightest. http://www.ispf.com/ for information and registration.

     Atheism is a non-prophet organization. I route, therefore I am.
       Alex Rubenstein, alex@nac.net, KC2BUO, ISP/C Charter Member
               Father of the Network and Head Bottle-Washer
     Net Access Corporation, 9 Mt. Pleasant Tpk., Denville, NJ 07834
Don't choose a spineless ISP; we have more backbone! http://www.nac.net
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2

yea i sent them mail about that a week or two ago.. it does seem odd that its
exactly reverse of a block of theirs :wink: I've not heard a word back from them.

   Netname: SPRINTLINK
   Netnumber: 144.228.0.0

3

How irresponsible can you get?

Advertising bogus routes, not taking any action about it when notified,
obviously not having even the most minimal filters in place to prevent
such things. Doesn't give me much confidence in the stability of their
network or in their protections against accidental (either clueless or
oops) or deliberate bogosity.

Obviously, this particular instance is of little real consequence and is
trivial for clueful providers to filter, but it is symptomatic of a
system that may well have bigger holes large enough to drive the
Titanic through as it sinks.

It would be interesting to do a survey to see just how many backbone
providers you can convince to advertise a really dumb route, a route for a
block you don't own and is obviously in use elsewhere, etc.

If this is what we see from a major backbone, what should we expect
from Joe's ISP and Steak House in Mudfest Wyoming? It seems that no
progress has been made, in North America as a whole, since previous
incidents.

Not only is it an exact reverse of one of their blocks, but it is
(logically) routed there. If you trace from a silly network that doesn't
filter the announcement:

6 sl-bb11-sea-2-1.sprintlink.net (144.232.6.21) 3.612 ms 3.437 ms 3.921 ms
7 sl-bb2-sea-8-0-0.sprintlink.net (144.232.6.30) 4.067 ms 4.427 ms 4.642 ms
8 sl-bb5-chi-5-0-0.sprintlink.net (144.228.10.62) 43.526 ms 43.728 ms 43.595 ms
9 sl-bb11-chi-0-2.sprintlink.net (144.232.0.173) 43.276 ms 42.518 ms 43.166 ms
10 sl-bb4-chi-4-0-0.sprintlink.net (144.232.0.166) 43.811 ms 43.082 ms 44.367 ms
11 144.228.252.11 (144.228.252.11) 67.481 ms 67.477 ms 69.302 ms
12 sl-paterno-2-0-128k.sprintlink.net (144.228.52.2) 76.157 ms 76.420 ms 74.786 ms