[PLUG] DNS/Network Wierdness

[Jon Nelson <lists@linuxnotes.net>]

Hi all,

I realized this morning that could not send or receive email to/from aol
customers.  I also found that I wasn't able to go to lancasteronline.com
either.  I thought that it was a name resolution problem, but I couldn't
connect with the IP either.  Then I ran a traceroute and found something
interesting:

catie:~# traceroute 64.12.51.132
traceroute to 64.12.51.132 (64.12.51.132), 30 hops max, 40 byte packets
1  jerry (10.73.86.8)  0.185 ms  0.126 ms  0.107 ms
2  greyson (66.33.243.1)  0.980 ms  0.906 ms  0.844 ms
3  wan-66-33-239-149.wan.epix.net (66.33.239.149)  61.175 ms  29.501 ms
39.825 ms
4  g6-1-rtr01-lkst.epix.net (208.111.192.225)  11.955 ms  42.702 ms
13.343 ms
5  74.40.4.177 (74.40.4.177)  42.350 ms  16.545 ms  12.727 ms
6  ge-1-0-0--0.br01.dlls.pa.frontiernet.net (74.40.4.162)  12.458 ms
40.916 ms  14.730 ms
7  12.126.174.121 (12.126.174.121)  42.875 ms !A *  29.148 ms !A

This also occurred with the IP from lancasteronline.com.  Both traces
die at 12.126.174.121.  The interesting part is the "!A".  From the man
page:

       Other possible annotations after the time are  !H,  !N,  or  !P
       (host,  network or protocol unreachable), !A, !C (access to the
       network or host, respectively, is prohibited), !S (source route
       failed), !F-<pmtu> (fragmentation needed - the RFC1191 Path MTU
       Discovery value is displayed),  !X  (communication  administra-
       tively  prohibited), !V (host precedence violation), !C (prece-
       dence cutoff in  effect),  or  !<num>  (ICMP  unreachable  code
       <num>).    These  are  defined  by  RFC1812  (which  supersedes
       RFC1716).  If almost all the probes  result  in  some  kind  of
       unreachable, traceroute will give up and exit.

What does that mean?  Did I get blacklisted somehow?

TIA,

Jon

___________________________________________________________________________
Philadelphia Linux Users Group         --        http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
General Discussion  --   http://lists.phillylinux.org/mailman/listinfo/plug