Re (3): finding the ip address for dns, nslookup & etc.
Tom and others,
From: Tom H <tomh0665@gmail.co.>
Date: Sun, 08 Aug 2010 20:39:34 -0400
> dnsmasq gets its upstream dns servers from /etc/resolv.conf unless you
> have set it to get them from elsewhere in /etc/dnsmasq.conf.
As in the earlier message.
peter@joule:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.0.1
search pi.shawcable.net
/etc/dnsmasq.conf is visible here.
http://members.shaw.ca/peasthope/dnsmasq.conf
Almost all comments. Exactly as installed if I'm not
mistaken. Certainly no upstream server is specified.
The system must get the ISP addresses by dhcp; but where
are they hidden?
> A "dig +trace debian.org" should display your upstream dns servers.
That's helpful. I also did "dig +trace google.ca";
results appended. Appears that dnsmasq referred to
192.33.4.12#53 and 193.0.14.129#53 upstream.
Incidentally, what is the "search domain", "pi.shawcable.net"
in this case?
Another observation: since a security update of the
Lenny system, about a month back, it doesn't know
its own name.
peter@joule:~$ telnet joule
telnet: could not resolve joule/telnet: Name or service not known
peter@joule:~$
Whereas "telnet localhost" works. Appears that
the security broke something.
I'm thinking of purging and reinstalling some
packages, beginning with dnsmasq. Does anyone
have a better idea?
Thanks, ... Peter E.
===========================================
joule:/home/peter# dig +trace debian.org
; <<>> DiG 9.6-ESV-R1 <<>> +trace debian.org
;; global options: +cmd
. 86297 IN NS h.root-servers.net.
. 86297 IN NS g.root-servers.net.
. 86297 IN NS e.root-servers.net.
. 86297 IN NS m.root-servers.net.
. 86297 IN NS j.root-servers.net.
. 86297 IN NS i.root-servers.net.
. 86297 IN NS f.root-servers.net.
. 86297 IN NS a.root-servers.net.
. 86297 IN NS d.root-servers.net.
. 86297 IN NS c.root-servers.net.
. 86297 IN NS l.root-servers.net.
. 86297 IN NS k.root-servers.net.
. 86297 IN NS b.root-servers.net.
;; Received 449 bytes from 127.0.0.1#53(127.0.0.1) in 69 ms
org. 172800 IN NS b2.org.afilias-nst.org.
org. 172800 IN NS a0.org.afilias-nst.info.
org. 172800 IN NS d0.org.afilias-nst.org.
org. 172800 IN NS a2.org.afilias-nst.info.
org. 172800 IN NS b0.org.afilias-nst.org.
org. 172800 IN NS c0.org.afilias-nst.info.
;; Received 430 bytes from 192.33.4.12#53(c.root-servers.net) in 51 ms
debian.org. 86400 IN NS ns1.debian.org.
debian.org. 86400 IN NS ns2.debian.org.
debian.org. 86400 IN NS ns3.debian.org.
debian.org. 86400 IN NS ns4.debian.com.
;; Received 186 bytes from 199.19.53.1#53(c0.org.afilias-nst.info) in 168 ms
debian.org. 3600 IN A 128.31.0.51
debian.org. 3600 IN A 194.109.137.218
debian.org. 28800 IN NS ns3.debian.org.
debian.org. 28800 IN NS ns1.debian.org.
debian.org. 28800 IN NS ns4.debian.com.
debian.org. 28800 IN NS ns2.debian.org.
;; Received 262 bytes from 194.177.211.209#53(ns4.debian.com) in 255 ms
joule:/home/peter# dig +trace google.ca
; <<>> DiG 9.6-ESV-R1 <<>> +trace google.ca
;; global options: +cmd
. 86149 IN NS m.root-servers.net.
. 86149 IN NS d.root-servers.net.
. 86149 IN NS h.root-servers.net.
. 86149 IN NS b.root-servers.net.
. 86149 IN NS k.root-servers.net.
. 86149 IN NS j.root-servers.net.
. 86149 IN NS l.root-servers.net.
. 86149 IN NS i.root-servers.net.
. 86149 IN NS e.root-servers.net.
. 86149 IN NS c.root-servers.net.
. 86149 IN NS g.root-servers.net.
. 86149 IN NS f.root-servers.net.
. 86149 IN NS a.root-servers.net.
;; Received 449 bytes from 127.0.0.1#53(127.0.0.1) in 12 ms
ca. 172800 IN NS a.ca-servers.ca.
ca. 172800 IN NS b.ca-servers.ca.
ca. 172800 IN NS c.ca-servers.ca.
ca. 172800 IN NS d.ca-servers.ca.
ca. 172800 IN NS e.ca-servers.ca.
ca. 172800 IN NS f.ca-servers.ca.
ca. 172800 IN NS j.ca-servers.ca.
ca. 172800 IN NS k.ca-servers.ca.
ca. 172800 IN NS l.ca-servers.ca.
ca. 172800 IN NS m.ca-servers.ca.
ca. 172800 IN NS sns-pb.isc.org.
;; Received 460 bytes from 193.0.14.129#53(k.root-servers.net) in 123 ms
google.ca. 86400 IN NS ns2.google.com.
google.ca. 86400 IN NS ns1.google.com.
google.ca. 86400 IN NS ns4.google.com.
google.ca. 86400 IN NS ns3.google.com.
;; Received 109 bytes from 192.228.30.9#53(e.ca-servers.ca) in 82 ms
google.ca. 300 IN A 74.125.127.99
google.ca. 300 IN A 74.125.127.104
google.ca. 300 IN A 74.125.127.105
google.ca. 300 IN A 74.125.127.106
google.ca. 300 IN A 74.125.127.103
google.ca. 300 IN A 74.125.127.147
;; Received 123 bytes from 216.239.32.10#53(ns1.google.com) in 86 ms
joule:/home/peter#
--
Sparcstation 2, sun4c, netboots *.SUN4C; SCSI disks not yet detected.
Personal site works; http://members.shaw.ca/peasthope/ .
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