Dynamic IP & cache DNS
Brad Knowles
brad.knowles at skynet.be
Tue Sep 11 08:46:43 UTC 2001
At 10:51 PM -0400 9/10/01, Kevin Darcy wrote:
> The fact that so many folks are feeling it
> necessary to defeat traditional caching, or drastically reduce its
> effect, just to eke out some dynamism, tells me it might be time for
> the DNS caching model to evolve to the next level.
And it tells me that people are mis-using and abusing the DNS for
the wrong goals. Maybe when things get bad enough, they'll wake up
and smell the dog poop.
Besides, I don't think your servers could handle this sort of
thing, even if you did have it. I sent you this stuff privately a
couple of days ago, and still haven't heard from you, so I figure
it's now fair game to discuss publicly:
% doc -d daimlerchrysler.com
Doc-2.2.3: doc -d daimlerchrysler.com
Doc-2.2.3: Starting test of daimlerchrysler.com. parent is com.
Doc-2.2.3: Test date - Sun Sep 9 17:42:18 EDT 2001
DEBUG: digging @a.gtld-servers.net. for soa of com.
soa @a.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @b.gtld-servers.net. for soa of com.
soa @b.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @c.gtld-servers.net. for soa of com.
soa @c.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @d.gtld-servers.net. for soa of com.
soa @d.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @e.gtld-servers.net. for soa of com.
soa @e.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @f.gtld-servers.net. for soa of com.
soa @f.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @g.gtld-servers.net. for soa of com.
soa @g.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @h.gtld-servers.net. for soa of com.
soa @h.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @i.gtld-servers.net. for soa of com.
soa @i.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @j.gtld-servers.net. for soa of com.
soa @j.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @k.gtld-servers.net. for soa of com.
soa @k.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @l.gtld-servers.net. for soa of com.
soa @l.gtld-servers.net. for com. has serial: 2001090900
DEBUG: digging @m.gtld-servers.net. for soa of com.
soa @m.gtld-servers.net. for com. has serial: 2001090900
SOA serial #'s agree for com. domain
Found 4 NS and 4 glue records for daimlerchrysler.com.
@a.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@b.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@c.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@d.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@e.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@f.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@g.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@h.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@i.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@j.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@k.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@l.gtld-servers.net. (non-AUTH)
Found 4 NS and 4 glue records for daimlerchrysler.com.
@m.gtld-servers.net. (non-AUTH)
DNServers for com.
=== 0 were also authoritatve for daimlerchrysler.com.
=== 13 were non-authoritative for daimlerchrysler.com.
Servers for com. (not also authoritative for daimlerchrysler.com.)
=== agree on NS records for daimlerchrysler.com.
DEBUG: domserv = fxclpr02.is.chrysler.com. fxiod01.is.chrysler.com.
ns1.sns-felb.debis.com. ns2.sns-ut.debis.com.
NS list summary for daimlerchrysler.com. from parent (com.) servers
== fxclpr02.is.chrysler.com. fxiod01.is.chrysler.com. ns1.sns-felb.debis.com.
== ns2.sns-ut.debis.com.
digging @fxclpr02.is.chrysler.com. for soa of daimlerchrysler.com.
soa @fxclpr02.is.chrysler.com. for daimlerchrysler.com. serial: 2001083003
digging @fxiod01.is.chrysler.com. for soa of daimlerchrysler.com.
soa @fxiod01.is.chrysler.com. for daimlerchrysler.com. serial: 2001083003
digging @ns1.sns-felb.debis.com. for soa of daimlerchrysler.com.
soa @ns1.sns-felb.debis.com. for daimlerchrysler.com. serial: 2001083003
digging @ns2.sns-ut.debis.com. for soa of daimlerchrysler.com.
soa @ns2.sns-ut.debis.com. for daimlerchrysler.com. serial: 2001083003
SOA serial #'s agree for daimlerchrysler.com.
Authoritative domain (daimlerchrysler.com.) servers agree on NS for
daimlerchrysler.com.
ERROR: NS list from daimlerchrysler.com. authoritative servers does not
=== match NS list from parent (com.) servers
NS list summary for daimlerchrysler.com. from authoritative servers
== fxclpr02.is.chrysler.com. fxiod01.is.chrysler.com. ns1.sns-felb.debis.de.
== ns2.sns-ut.debis.de.
ERROR: ns1.sns-felb.debis.com. claims to be authoritative, but does
not appear in
NS list from authoritative servers
ERROR: ns2.sns-ut.debis.com. claims to be authoritative, but does not appear in
NS list from authoritative servers
Checking 0 potential addresses for hosts at daimlerchrysler.com.
==
Summary:
ERRORS found for daimlerchrysler.com. (count: 3)
Done testing daimlerchrysler.com. Sun Sep 9 17:42:25 EDT 2001
% dnswalk -alF daimlerchrysler.com.
Checking daimlerchrysler.com.
Getting zone transfer of daimlerchrysler.com. from
ns1.sns-felb.debis.de...failed
FAIL: Zone transfer of daimlerchrysler.com. from
ns1.sns-felb.debis.de failed: REFUSED
Getting zone transfer of daimlerchrysler.com. from
fxclpr02.is.chrysler.com...done.
SOA=ns1.sns-felb.debis.de contact=dns.debis.de
WARN: www-video.daimlerchrysler.com A 141.113.71.72: no PTR record
WARN: www1.daimlerchrysler.com CNAME www.daimlerchrysler.com: CNAME
(to lb02.extra.daimlerchrysler.com)
WARN: www2.daimlerchrysler.com CNAME www.daimlerchrysler.com: CNAME
(to lb02.extra.daimlerchrysler.com)
WARN: www3.daimlerchrysler.com CNAME www.daimlerchrysler.com: CNAME
(to lb02.extra.daimlerchrysler.com)
WARN: www4.daimlerchrysler.com CNAME www.daimlerchrysler.com: CNAME
(to lb02.extra.daimlerchrysler.com)
WARN: epeople01.daimlerchrysler.com A 141.113.96.52: no PTR record
BAD: werk-rastatt.daimlerchrysler.com NS ns2.sns-ut.debis.de: lame NS
delegation
WARN: lfelde.daimlerchrysler.com MX dcmail.daimlerchrysler.com: CNAME
(to pluto.daimler-benz.com)
WARN: hp.lfelde.daimlerchrysler.com MX dcmail.daimlerchrysler.com:
CNAME (to pluto.daimler-benz.com)
WARN: mieb.lfelde.daimlerchrysler.com MX dcmail.daimlerchrysler.com:
CNAME (to pluto.daimler-benz.com)
WARN: ivm.lfelde.daimlerchrysler.com MX dcmail.daimlerchrysler.com:
CNAME (to pluto.daimler-benz.com)
WARN: casim.lfelde.daimlerchrysler.com MX dcmail.daimlerchrysler.com:
CNAME (to pluto.daimler-benz.com)
WARN: ediweb.daimlerchrysler.com A 53.122.193.236: no PTR record
WARN: ProduktionsprogrammNFZ0-supplier.daimlerchrysler.com A
141.113.71.41: no PTR record
BAD: intra-standards.daimlerchrysler.com NS ns1.sns-felb.debis.de:
lame NS delegation
BAD: intra-standards.daimlerchrysler.com NS ns2.sns-ut.debis.de: lame
NS delegation
WARN: www.techauthority.daimlerchrysler.com A 63.73.131.138: no PTR record
WARN: supplier.daimlerchrysler.com A 141.113.96.10: no PTR record
WARN: web-edc.daimlerchrysler.com A 141.113.71.60: no PTR record
WARN: ns1.graz.daimlerchrysler.com A 193.41.41.3: no PTR record
WARN: ns2.graz.daimlerchrysler.com A 193.41.41.5: no PTR record
WARN: mbas.daimlerchrysler.com A 141.113.71.61: no PTR record
WARN: www-stage.inter-ut.daimlerchrysler.com A 53.122.192.151: no PTR record
WARN: ceron-nfz.daimlerchrysler.com A 53.122.193.131: no PTR record
WARN: str.daimlerchrysler.com MX dcmail.daimlerchrysler.com: CNAME
(to pluto.daimler-benz.com)
WARN: wwwsg.daimlerchrysler.com A 141.113.96.40: no PTR record
WARN: cms-intra.daimlerchrysler.com A 141.113.98.62: no PTR record
BAD: rt.daimlerchrysler.com NS ns2.sns-ut.debis.de: lame NS delegation
WARN: www.extendedenterprise.daimlerchrysler.com A 195.71.145.57: no PTR record
WARN: VuR-Werk-Rastatt.daimlerchrysler.com A 141.113.96.60: no PTR record
WARN: extranet7.daimlerchrysler.com A 204.189.94.106: no PTR record
WARN: www-dev.intra-ut.daimlerchrysler.com A 53.113.75.19: no PTR record
WARN: ns1.mobile.daimlerchrysler.com A 193.41.41.3: no PTR record
WARN: ns2.mobile.daimlerchrysler.com A 193.41.41.5: no PTR record
WARN: cjatraining.daimlerchrysler.com A 194.78.13.21: no PTR record
WARN: ProduktionsprogrammNFZ1-supplier.daimlerchrysler.com A
141.113.71.42: no PTR record
FAIL: Cannot find address for nameserver: NXDOMAIN
FAIL: Cannot get SOA record for jkt.daimlerchrysler.com from
w158nfz10.jkt.daimler-benz.com (lame?): no nameservers
BAD: jkt.daimlerchrysler.com NS w158nfz10.jkt.daimler-benz.com: unknown host
WARN: woerth.daimlerchrysler.com MX dcmail.daimlerchrysler.com: CNAME
(to pluto.daimler-benz.com)
WARN: gt.daimlerchrysler.com A 141.113.71.64: no PTR record
WARN: cms-inter.daimlerchrysler.com A 141.113.98.61: no PTR record
BAD: rtws.daimlerchrysler.com NS ns2.sns-ut.debis.de: lame NS delegation
WARN: sifi.daimlerchrysler.com MX dcmail.daimlerchrysler.com: CNAME
(to pluto.daimler-benz.com)
WARN: mbindia.daimlerchrysler.com MX dcmail.daimlerchrysler.com:
CNAME (to pluto.daimler-benz.com)
WARN: s96ms0w1.daimlerchrysler.com A 53.74.114.44: no PTR record
WARN: webdemo1-edc.daimlerchrysler.com A 141.113.71.45: no PTR record
WARN: odms1.daimlerchrysler.com A 53.79.29.28: no PTR record
WARN: ceron-pkw.daimlerchrysler.com A 53.122.193.132: no PTR record
FAIL: Cannot get SOA record for anx.daimlerchrysler.com from
cldnspr2-nf0.cldc.chrysler.com (lame?): no nameservers
BAD: anx.daimlerchrysler.com NS cldnspr2-nf0.cldc.chrysler.com: unknown host
FAIL: Cannot get SOA record for anx.daimlerchrysler.com from
shdnspr2-nf0.shdc.chrysler.com (lame?): no nameservers
BAD: anx.daimlerchrysler.com NS shdnspr2-nf0.shdc.chrysler.com: unknown host
FAIL: Cannot get SOA record for anx.daimlerchrysler.com from
oddnspr2-nf0.oddc.chrysler.com (lame?): no nameservers
BAD: anx.daimlerchrysler.com NS oddnspr2-nf0.oddc.chrysler.com: unknown host
FAIL: Cannot get SOA record for anx.daimlerchrysler.com from
tcdnspr1-nf0.hq.chrysler.com (lame?): no nameservers
BAD: anx.daimlerchrysler.com NS tcdnspr1-nf0.hq.chrysler.com: unknown host
FAIL: Cannot get SOA record for anx.daimlerchrysler.com from
cldnspr1-nf0.cldc.chrysler.com (lame?): no nameservers
BAD: anx.daimlerchrysler.com NS cldnspr1-nf0.cldc.chrysler.com: unknown host
WARN: ftp-edc.daimlerchrysler.com A 141.113.71.63: no PTR record
WARN: gagg.daimlerchrysler.com MX dcmail.daimlerchrysler.com: CNAME
(to pluto.daimler-benz.com)
WARN: tss.daimlerchrysler.com MX dcmail.daimlerchrysler.com: CNAME
(to pluto.daimler-benz.com)
WARN: extended-enterprise.daimlerchrysler.com A 141.113.71.62: no PTR record
WARN: www.dcxchange.daimlerchrysler.com A 206.189.222.50: no PTR record
WARN: ns.rtna.daimlerchrysler.com: possible duplicate A record (glue
of rtna.daimlerchrysler.com?)
WARN: ns2.rtna.daimlerchrysler.com: possible duplicate A record (glue
of rtna.daimlerchrysler.com?)
WARN: gnb2.daimlerchrysler.com A 195.71.145.56: no PTR record
WARN: webdemo2-edc.daimlerchrysler.com A 141.113.71.46: no PTR record
WARN: mbusiplace.daimlerchrysler.com A 53.247.1.134: no PTR record
WARN: mtu.daimlerchrysler.com A 193.41.41.134: no PTR record
WARN: ecm-supplier.daimlerchrysler.com A 141.113.71.43: no PTR record
WARN: edc-stats.daimlerchrysler.com A 141.113.71.80: no PTR record
8 failures, 54 warnings, 11 errors.
--
Brad Knowles, <brad.knowles at skynet.be>
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