[Dnsmasq-discuss] DNS on small LAN connected to rr.com cable modem questions

[John Griessen]

I have questions about dnsmasq running on a debian linux two ethernet port box, judigate.   judigate
is connected with ethernet port ethout to a austin.rr.com cable modem, and via ethernet port eth0
to my lan with printers and a computer named toolbench.

My question is, "with dnsmasq running on the router box, judgate, can I get name resolution
from that box to work while I am ssh logged in to it?"

DNS seems to work from toolbench correctly,
but from judigate many false name resolutions happen.  The false names come from servers operated by time warner cable,
like this:

routem at judigate:/etc$ ping toolbench
PING toolbench (24.28.193.9) 56(84) bytes of data.
64 bytes from 24.28.193.9: icmp_seq=1 ttl=45 time=48.8 ms

whereas a ping from toolbench gives:


routem at judigate:/etc$ sudo dnsmasq --version
Dnsmasq version 2.47  Copyright (C) 2000-2009 Simon Kelley
Compile time options IPv6 GNU-getopt DBus I18N TFTP


If I put a non rr.com dns server first in the list, (/etc/resolvconf/resolv.conf.d/base),
I can get
routem at judigate:/etc$  ping toolbench
ping: unknown host toolbench


To use ssh on my lan, I have to use ip addresses instead of names for some steps.

Thanks for any clarifications,

John Griessen


Here are the changes from defaults that I use:
==========================================
interface=eth0

dhcp-range=192.168.15.03,192.168.15.050,24h


dhcp-host=00:40:f4:05:e2:52,192.168.15.3,toolbench,24h
dhcp-host=color1,192.168.15.6,24h
dhcp-host=lj4,192.168.15.10,24h
dhcp-host=judilab,192.168.15.4,24h


log-queries
log-dhcp