[CentOS] SOLVED Re: Problems with bind on 5.2

Scott Silva ssilva at sgvwater.com
Thu Jul 10 20:51:18 UTC 2008


on 7-8-2008 11:15 PM Robert - elists spake the following:
> After digging for a bit at arin
> 
> Near as I can tell, it appears the authoritative dns servers for that
> specific block are a lil messed up for the moment.
> 
> Not delegating something properly.
> 
> Tough to say without admin access to those machines.
> 
> If you check your netblock at ARIN whois, it says these two dns servers are
> authoritive
> 
> OrgName:    MCI Communications Services, Inc. d/b/a Verizon Business 
> OrgID:      MCICS
> Address:    22001 Loudoun County Pkwy
> City:       Ashburn
> StateProv:  VA
> PostalCode: 20147
> Country:    US
> 
> NetRange:   208.192.0.0 - 208.255.255.255 
> CIDR:       208.192.0.0/10 
> NetName:    UUNET1996B
> NetHandle:  NET-208-192-0-0-1
> Parent:     NET-208-0-0-0-0
> NetType:    Direct Allocation
> NameServer: AUTH03.NS.UU.NET
> NameServer: AUTH00.NS.UU.NET
> Comment:    ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE
> RegDate:    1996-05-08
> Updated:    2006-12-14
> 
> dig -x 208.252.226.222 @AUTH00.NS.UU.NET
> 
> ; <<>> DiG 9.2.4 <<>> -x 208.252.226.222 @AUTH00.NS.UU.NET
> ; (1 server found)
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47733
> ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 1
> 
> ;; QUESTION SECTION:
> ;222.226.252.208.in-addr.arpa.  IN      PTR
> 
> ;; AUTHORITY SECTION:
> 226.252.208.in-addr.arpa. 21600 IN      NS      auth02.ns.uu.net.
> 226.252.208.in-addr.arpa. 21600 IN      NS      auth20.ns.wcom.com.
> 
> ;; ADDITIONAL SECTION:
> auth02.ns.uu.net.       3600    IN      A       198.6.1.82
> 
> When you do a reverse dig at them, one of them will tell you that this ip is
> authoritive
> 
> 198.6.1.82 aka That ip is auth02.ns.uu.net
> 
> Auto03 returns squat...
> 
> dig -x 208.252.226.222 @AUTH03.NS.UU.NET
> 
> ; <<>> DiG 9.2.4 <<>> -x 208.252.226.222 @AUTH03.NS.UU.NET
> ; (1 server found)
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32548
> ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 0
> 
> ;; QUESTION SECTION:
> ;222.226.252.208.in-addr.arpa.  IN      PTR
> 
> ;; AUTHORITY SECTION:
> 226.252.208.in-addr.arpa. 21600 IN      NS      auth02.ns.uu.net.
> 226.252.208.in-addr.arpa. 21600 IN      NS      auth20.ns.wcom.com.
> 
> So, maybe something is a lil broken in their in-addr.arpa land
> 
> Could be wrong though...
> 
> If you dig stuff at the IP address, it seems to at least try to work though
> 
> Something is not right imho
> 
> dig -x 208.252.226.222 @198.6.1.82
> 
> ; <<>> DiG 9.2.4 <<>> -x 208.252.226.222 @198.6.1.82
> ; (1 server found)
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62935
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0
> 
> ;; QUESTION SECTION:
> ;222.226.252.208.in-addr.arpa.  IN      PTR
> 
> ;; ANSWER SECTION:
> 222.226.252.208.in-addr.arpa. 21600 IN  CNAME
> 222.192.226.252.208.in-addr.arpa.
> 
> ;; AUTHORITY SECTION:
> 192.226.252.208.in-addr.arpa. 21600 IN  NS      mail.sgvwater.com.
> 
> Best wishes...
> 
> - rh
Verizon had some automatic script that comments out your reverse DNS entries 
if it finds your server offline. I guess when the T1 line was out last weekend 
it hit and killed the entries in the main ip block.

Case closed... But I think I should have been notified of this change, as I 
already get a notice everytime the T1 goes offline.


Thanks for everyones help, as it is a lot easier to look at DNS from several 
locations.

-- 
MailScanner is like deodorant...
You hope everybody uses it, and
you notice quickly if they don't!!!!

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 258 bytes
Desc: OpenPGP digital signature
Url : http://lists.centos.org/pipermail/centos/attachments/20080710/6641ea7f/signature.bin


More information about the CentOS mailing list