Slow DNS Lookups on Debian Etch AMD 64
Hi All,
I'm getting terrible DNS lookup performance on my Debian Etch system.
I've installed the "Etch" - Official Beta amd64 version.
After installing, I noticed that the Internet browsers were taking a
really long time to pull up a web page. I also observed that the
browser delays seemed to be DNS related as they were spending a lot of
time "Looking up whatever.com...".
I turned off IPv6 and it made no observable difference.
It seems that a DNS lookup is taking 10s on average. Here is the dig
output for one such lookup:
debian:/# time dig 192.168.0.1 www.yahoo.com
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 52841
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;192.168.0.1. IN A
;; AUTHORITY SECTION:
. 7650 IN SOA A.ROOT-SERVERS.NET.
NSTLD.VERISIGN-GRS.COM. 2007050901 1800 900 604800 86400
;; Query time: 10 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Thu May 10 09:39:21 2007
;; MSG SIZE rcvd: 104
; <<>> DiG 9.3.4 <<>> 192.168.0.1 www.yahoo.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60232
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 8, ADDITIONAL: 8
;; QUESTION SECTION:
;www.yahoo.com. IN A
;; ANSWER SECTION:
www.yahoo.com. 41 IN CNAME www.yahoo-ht3.akadns.net.
www.yahoo-ht3.akadns.net. 44 IN A 209.131.36.158
;; AUTHORITY SECTION:
akadns.net. 146740 IN NS zc.akadns.org.
akadns.net. 146740 IN NS zd.akadns.org.
akadns.net. 146740 IN NS eur1.akadns.net.
akadns.net. 146740 IN NS eur7.akadns.net.
akadns.net. 146740 IN NS usw1.akadns.net.
akadns.net. 146740 IN NS asia9.akadns.net.
akadns.net. 146740 IN NS za.akadns.org.
akadns.net. 146740 IN NS zb.akadns.org.
;; ADDITIONAL SECTION:
za.akadns.org. 63940 IN A 204.2.178.133
zb.akadns.org. 63940 IN A 206.132.100.105
zc.akadns.org. 63940 IN A 63.209.3.132
zd.akadns.org. 63940 IN A 204.2.178.133
eur1.akadns.net. 4599 IN A 213.254.204.197
eur7.akadns.net. 4599 IN A 193.108.94.88
usw1.akadns.net. 4599 IN A 63.209.3.132
asia9.akadns.net. 4599 IN A 220.73.220.4
;; Query time: 10 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Thu May 10 09:39:26 2007
;; MSG SIZE rcvd: 368
real 0m10.031s
user 0m0.000s
sys 0m0.000s
debian:/#
This very same machine also has Windows Vista Ultimate 64 installed on
it and DNS lookups are lightning fast. There is definitely something
going on with Debian Etch or perhaps the network configuration. I am
using the ndiswrapper around a Windows driver for my Broadcom wireless
network adapter.
Does anyone have any ideas for me?
Thanks,
Dallas Clement
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