AT&T Diagnostics

First observed: 2011-12-18
First reported to AT&T: 2011-12-21 15:00ish ET
Last updated (still broken): 2012-01-23 11:15 ET
Update! Had a friend who works in Network Ops at another major carrier confirm my analysis. So AT&T it just being stubborn about fixing this.

You can confirm the continued existence of the problem yourself by using NTT's traceroute server out of LA, CA - US and chosing an address in the /21 block described below.

Routing problem/infinite loop in swbell/AT&T network at NTT; for me, I encounter this between Dreamhost and AT&T Network block 108.93.168/21 (i.e, 108.93.168.0-108.93.175.255) [apx 2000 addresses]. Routing loop starts 7 hops out from Dreamhost, right after Tier-1 ntt.net traffic enters swbell.net:

traceroute to adsl-108-93-171-254.dsl.wlfrct.sbcglobal.net (108.93.171.254), 30 hops max, 60 byte packets
 1  ip-75-119-220-1.dreamhost.com (75.119.220.1)  61.358 ms  61.342 ms  61.333 ms
 2  router-0.hq.newdream.net (66.33.201.1)  41.634 ms  41.638 ms  41.630 ms
 3  ip-66-33-201-213.dreamhost.com (66.33.201.213)  1.203 ms  1.463 ms  1.464 ms
 4  xe-0-6-0-3.r04.lsanca03.us.bb.gin.ntt.net (198.172.90.69)  1.176 ms  1.169 ms  1.424 ms
 5  xe-1.sbc.lsanca03.us.bb.gin.ntt.net (129.250.9.174)  1.138 ms  1.112 ms xe-0.sbc.lsanca03.us.bb.gin.ntt.net (129.250.9.170)  0.841 ms
 6  ppp-151-164-39-101.rcsntx.swbell.net (151.164.39.101)  2.460 ms  2.007 ms  1.751 ms
 7  151.164.98.90 (151.164.98.90)  20.846 ms  20.842 ms  20.833 ms
 8  151.164.98.89 (151.164.98.89)  1.680 ms  1.483 ms  1.471 ms
 9  151.164.98.90 (151.164.98.90)  20.574 ms  24.468 ms  24.016 ms
10  151.164.98.89 (151.164.98.89)  2.004 ms  1.991 ms  1.972 ms
11  151.164.98.90 (151.164.98.90)  23.923 ms  21.859 ms  21.822 ms
12  151.164.98.89 (151.164.98.89)  1.748 ms  1.795 ms  1.836 ms
13  151.164.98.90 (151.164.98.90)  20.084 ms  25.985 ms  25.973 ms
14  151.164.98.89 (151.164.98.89)  2.101 ms  2.097 ms  1.932 ms
15  151.164.98.90 (151.164.98.90)  23.763 ms  21.772 ms  25.776 ms
16  151.164.98.89 (151.164.98.89)  2.334 ms  2.329 ms  2.301 ms
17  151.164.98.90 (151.164.98.90)  25.683 ms  23.266 ms  23.236 ms
18  151.164.98.89 (151.164.98.89)  2.177 ms  2.138 ms  2.179 ms
19  151.164.98.90 (151.164.98.90)  24.313 ms  23.537 ms  21.456 ms
20  151.164.98.89 (151.164.98.89)  2.675 ms  2.657 ms  2.263 ms
21  151.164.98.90 (151.164.98.90)  23.619 ms  21.303 ms  24.947 ms
22  151.164.98.89 (151.164.98.89)  2.904 ms  2.901 ms  2.894 ms
23  151.164.98.90 (151.164.98.90)  21.941 ms  21.930 ms  21.912 ms
24  151.164.98.89 (151.164.98.89)  2.857 ms  2.846 ms  2.834 ms
25  151.164.98.90 (151.164.98.90)  25.355 ms  22.468 ms  22.446 ms
26  151.164.98.89 (151.164.98.89)  2.308 ms  2.500 ms  2.532 ms
27  151.164.98.90 (151.164.98.90)  30.348 ms  28.625 ms  28.300 ms
28  151.164.98.89 (151.164.98.89)  2.902 ms  2.888 ms  2.877 ms
29  151.164.98.90 (151.164.98.90)  4.260 ms  4.250 ms  4.237 ms
30  151.164.98.89 (151.164.98.89)  3.439 ms  3.419 ms  3.416 ms
And these ping responses are not normal either:
From 151.164.98.89 icmp_seq=7274 Time to live exceeded
From 151.164.98.89 icmp_seq=7275 Time to live exceeded
From 151.164.98.89 icmp_seq=7276 Time to live exceeded
From 151.164.98.89 icmp_seq=7277 Time to live exceeded
From 151.164.98.89 icmp_seq=7278 Time to live exceeded
From 151.164.98.89 icmp_seq=7279 Time to live exceeded
From 151.164.98.89 icmp_seq=7280 Time to live exceeded
From 151.164.98.89 icmp_seq=7281 Time to live exceeded
From 151.164.98.89 icmp_seq=7282 Time to live exceeded
From 151.164.98.89 icmp_seq=7283 Time to live exceeded
From 151.164.98.89 icmp_seq=7284 Time to live exceeded
From 151.164.98.89 icmp_seq=7285 Time to live exceeded
From 151.164.98.89 icmp_seq=7286 Time to live exceeded
From 151.164.98.89 icmp_seq=7287 Time to live exceeded
From 151.164.98.89 icmp_seq=7288 Time to live exceeded
From 151.164.98.89 icmp_seq=7289 Time to live exceeded
From 151.164.98.89 icmp_seq=7290 Time to live exceeded
From 151.164.98.89 icmp_seq=7291 Time to live exceeded
From 151.164.98.89 icmp_seq=7292 Time to live exceeded
From 151.164.98.89 icmp_seq=7293 Time to live exceeded
From 151.164.98.89 icmp_seq=7294 Time to live exceeded
From 151.164.98.89 icmp_seq=7295 Time to live exceeded
From 151.164.98.89 icmp_seq=7296 Time to live exceeded
From 151.164.98.89 icmp_seq=7297 Time to live exceeded
From 151.164.98.89 icmp_seq=7298 Time to live exceeded
From 151.164.98.89 icmp_seq=7299 Time to live exceeded
From the other end, the traceroutes just time out at a certain point (because the response packets are eaten by the routing problem). Here's a screenshot of a traceroute from a DSL customer:

The Barella Family

(Not what you wanted? Try these similar names.)

Family

Name / email Birthplace Birth year Place of residence Web page
Alberto Leonardo ("Leo")
gmail com の barella.leo
Pavia, Italy 1969 Chicago, IL, USA None
Anja Catharina
quicknet nl の a.barella
Amsterdam 1968 None
Corine
brutele be の corinebarella
Montegnee, Belgium 1967 Belgium None
Didier Montegnee, Belgium 23 August 1972 Belgium None
Elmar
handwerk-owl de の elmar.barella
1952 Germany None
Frank Jr.
hotmail com の hominid52
None
Fred
hetnet nl の fred-marian
Holland None
Giuseppina
tin it の giuseppina.barella
Rovigo, Italy None
Jeff Hampshire, England 1967 Guildford, England None
Joe New Hartford, Connecticut USA 1937 New Hartford, Connecticut USA None
José Eduardo
uol com br の edubarella
Brazil None
Luiz Felipe
brturbo com の felipebarella
Brasil None
Maluf Brazil None
Marc
hotmail com の barella84
Brazil www.malufbarella.com.br
Maria Pordenone, Italy 2001 Udine, Italy maurobarella.org/maria
Martin Enfield, England Cheshunt, England www.barella.co.uk
Mauro
maurobarella org の mb
Palermo, Italy 1956 Udine, Italy maurobarella.org
Mercedes Barella Lopez
hotmail com の dana_bluegirl
1987 Monterrey, Mexico None
Miguel
uol com br の miguelbarella
S. Paulo, Brazil None
Perette
barella org の perette
Winsted, Connecticut USA 1970 Rochester, NY USA perette.barella.org
Patricia
barella org の pat
New Hartford, Connecticut USA 1940 Torrington, CT USA None
Rick
adelphia net の mine1224
www.barella.net
Rodrigo
solotest com の omni
Brazil None
Romano
freesurf ch の jero.barella
Switzerland None

To prevent automated address collection by spammers, we've mangled the e-mail addresses. To reconstitute the e-mail address reverse the parts before and after the 'の' character, add dots where appropriate, and remove extra spaces.

Links

Are you a Barella? If so, you can have your_name@barella.org as your e-mail address. You can also have a web page at barella.org/your_name or your_name.barella.org. More information.

Similarly named sites

Problems with the barella.org domain should also be referred to Perette Barella.