inverse mapping problem

Mon Oct 29 04:55:17 UTC 2001

> Aloha,
> 
>     I am having a problem and do not think it is me, but maybe someone can
> shed some light on this.  I have a client that tries to connect to my ftp
> server and he gets a delay to 1 - 2 minutes before a login prompt comes up.
> I then looked in my /var/log/messages and found that his ip says lame
> server.  And when I do a nslookup, it comes back servfail.  So I looked in
> the whois database and this is what I come up with:  also more info at
> bottom
> ROADRUNNER-HAWAII (NETBLK-ROADRUNNER-HAWAII2)
>    13241 Woodland Park Road
>    Herndon, VA 20171
>    US
> 
>    Netname: ROADRUNNER-HAWAII2
>    Netblock: 66.91.0.0 - 66.91.111.255
>    Maintainer: RRHI
> 
>    Coordinator:
>       ServiceCo LLC  (ZS30-ARIN)  abuse at rr.com
>       1-703-345-3416
> 
>    Domain System inverse mapping provided by:
> 
>    DNS1.RR.COM			24.30.200.3
>    DNS2.RR.COM			24.30.201.3
>    DNS3.RR.COM			24.30.199.7
>    DNS4.RR.COM			65.24.0.172
> 
>    ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE
> 
>    Record last updated on 13-Aug-2001.
>    Database last updated on 27-Oct-2001 03:34:37 EDT.
> 
> Now that whole netblck and can't nslookup. about 50 ip addresses
> come back servfail.  So I then try another netblock from hawaii.rr.com:
> ROADRUNNER-HAWAII (NETBLK-ROADRUNNER-HAWAII)
>    13241 Woodland Park Road
>    Herndon, VA 20171
>    US
> 
>    Netname: ROADRUNNER-HAWAII
>    Netblock: 66.8.128.0 - 66.8.255.255
>    Maintainer: RRHI
> 
>    Coordinator:
>       ServiceCo LLC  (ZS30-ARIN)  abuse at rr.com
>       1-703-345-3416
> 
>    Domain System inverse mapping provided by:
> 
>    DNS1.RR.COM			24.30.200.3
>    DNS2.RR.COM			24.30.201.3
>    DNS3.RR.COM			24.30.199.7
>    DNS4.RR.COM			65.24.0.172
> 
>    ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE
> 
>    Record last updated on 14-Jun-2001.
>    Database last updated on 27-Oct-2001 03:34:37 EDT.
> Ip addresses in this block I can nslookup with no problem.Could it be that
> they do not have reverse zones in there DNSfor Netblock: 66.91.0.0 -
> 66.91.111.255?Also when I use dig -x 66.91.1.107 (Clients ip) It comes back
> with  107.1.91.66.in-addr.arpa.    IN    PTRWhy does nslookup fail with
> netblock  66.91.0.0 - 66.91.111.255But dig works. And all other clients that
> connect to my ftp server, everything is fine, no problems reported and also
> no lame servers on there IP's. just that one client.
> ThanksBilly

	Well it looks like RoadRunner failed to inform ARIN that they
	want a different set of servers to serve 1.91.66.in-addr.arpa.

	You sometimes wonder how some ISP's stay in business.  Stuff
	ups like this drive customers away.

	Anyway it's not your fault.  It's RoadRunner's.

	Mark

; <<>> DiG 8.3 <<>> ns -x @ARROWROOT.ARIN.NET 
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 0
;; QUERY SECTION:
;;	1.91.66.in-addr.arpa, type = NS, class = IN

;; AUTHORITY SECTION:
1.91.66.in-addr.arpa.	1D IN NS	DNS4.RR.COM.
1.91.66.in-addr.arpa.	1D IN NS	DNS1.RR.COM.
1.91.66.in-addr.arpa.	1D IN NS	DNS2.RR.COM.
1.91.66.in-addr.arpa.	1D IN NS	DNS3.RR.COM.

;; Total query time: 234 msec
;; FROM: drugs.dv.isc.org to SERVER: ARROWROOT.ARIN.NET  198.133.199.110
;; WHEN: Mon Oct 29 15:40:46 2001
;; MSG SIZE  sent: 38  rcvd: 120


; <<>> DiG 8.3 <<>> ns 1.91.66.in-addr.arpa @DNS1.RR.COM 
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 2
;; QUERY SECTION:
;;	1.91.66.in-addr.arpa, type = NS, class = IN

;; ANSWER SECTION:
1.91.66.in-addr.arpa.	1D IN NS	dns2.hawaii.rr.com.
1.91.66.in-addr.arpa.	1D IN NS	dns1.hawaii.rr.com.

;; ADDITIONAL SECTION:
dns2.hawaii.rr.com.	1H IN A		24.25.227.66
dns1.hawaii.rr.com.	1H IN A		24.25.227.64

;; Total query time: 289 msec
;; FROM: drugs.dv.isc.org to SERVER: DNS1.RR.COM  24.30.200.3
;; WHEN: Mon Oct 29 15:41:01 2001
;; MSG SIZE  sent: 38  rcvd: 121


; <<>> DiG 8.3 <<>> ns 1.91.66.in-addr.arpa @dns1.hawaii.rr.com. 
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 3
;; QUERY SECTION:
;;	1.91.66.in-addr.arpa, type = NS, class = IN

;; ANSWER SECTION:
1.91.66.in-addr.arpa.	1D IN NS	dns2.hawaii.rr.com.
1.91.66.in-addr.arpa.	1D IN NS	dns1.hawaii.rr.com.
1.91.66.in-addr.arpa.	1D IN NS	ns1.mw.mediaone.net.

;; ADDITIONAL SECTION:
dns2.hawaii.rr.com.	1D IN A		24.25.227.66
dns1.hawaii.rr.com.	1D IN A		24.25.227.64
ns1.mw.mediaone.net.	5h31m4s IN A	24.131.1.8

;; Total query time: 327 msec
;; FROM: drugs.dv.isc.org to SERVER: dns1.hawaii.rr.com.  24.25.227.64
;; WHEN: Mon Oct 29 15:45:26 2001
;; MSG SIZE  sent: 38  rcvd: 170

--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org