btw, how i got there

wrt-biwa is a netgear wndr3800 running ATTITUDE ADJUSTMENT (12.09,
r36088) in a pretty vanilla install.

----

this got me started

Nmap scan report for wrt-biwa (50.135.235.34)
Host is up (0.17s latency).
rDNS record for 50.135.235.34: c-50-135-235-34.hsd1.wa.comcast.net
Not shown: 996 closed ports
PORT    STATE    SERVICE
22/tcp  open     ssh
53/tcp  open     domain     <<<<<<======
80/tcp  filtered http
443/tcp filtered https

----

it answered queries from a host on the other side of the country

ran.psg.com:/home/randy> dig @wrt-biwa psg.com. a

; <<>> DiG 9.8.1-P1 <<>> @wrt-biwa psg.com. a
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6175
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;psg.com.                       IN      A

;; ANSWER SECTION:
psg.com.                3373    IN      A       147.28.0.62

;; Query time: 184 msec
;; SERVER: 50.135.235.34#53(50.135.235.34)
;; WHEN: Mon Jan 20 10:52:37 2014
;; MSG SIZE  rcvd: 41

----

edit /etc/config/dhcp config dnsmasq section to add

        option notinterface 'eth1'                                              

restart dnsmasq

# /etc/init.d/dnsmasq restart

---

ran.psg.com:/home/randy> dig @wrt-biwa psg.com. a

; <<>> DiG 9.8.1-P1 <<>> @wrt-biwa psg.com. a
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached

---

randy
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