[Dnsmasq-discuss] Mac client constant reverse query on itself

[Bob Davis]

Looks like I had a formatting problem on my previous post.  Let's try this again.

I'm running 2.46 on Tomato serving up DNS and DHCP to a mix of PC's, NAS's and a Mac.  Everything is working great but I'm puzzled by the behavior of the Mac client (10.5.6).  Every 10-15 seconds the Mac performs a reverse DNS query on it's own address.  As far as I can tell, DNSMASQ seems to reply correctly with the host name but then 15 seconds later it queries again.  Not sure if this has to to with Bonjour or not.  IPV6 is turned off on the Mac.  Here's a copy of the parameters to DNSMASQ:
 
dhcp-authoritative
bogus-priv
all-servers
filterwin2k
domain-needed
domain=localhost
cache-size=8192
log-dhcp
log-queries
log-async
log-facility=/var/log/dnsmasq
 
Here's what the log entries look like:
 
Feb 23 21:17:11 dnsmasq[1724]: query[PTR] 101.0.168.192.in-addr.arpa from 192.168.0.101
Feb 23 21:17:11 dnsmasq[1724]: DHCP 192.168.0.101 is iMac1.localhost
Feb 23 21:17:24 dnsmasq[1724]: query[PTR] 101.0.168.192.in-addr.arpa from 192.168.0.101
Feb 23 21:17:24 dnsmasq[1724]: DHCP 192.168.0.101 is iMac1.localhost
Feb 23 21:17:36 dnsmasq[1724]: query[PTR] 101.0.168.192.in-addr.arpa from 192.168.0.101
Feb 23 21:17:36 dnsmasq[1724]: DHCP 192.168.0.101 is iMac1.localhost
Feb 23 21:17:48 dnsmasq[1724]: query[PTR] 101.0.168.192.in-addr.arpa from 192.168.0.101
Feb 23 21:17:48 dnsmasq[1724]: DHCP 192.168.0.101 is iMac1.localhost
Feb 23 21:18:01 dnsmasq[1724]: query[PTR] 101.0.168.192.in-addr.arpa from 192.168.0.101
Feb 23 21:18:01 dnsmasq[1724]: DHCP 192.168.0.101 is iMac1.localhost
Feb 23 21:18:14 dnsmasq[1724]: query[PTR] 101.0.168.192.in-addr.arpa from 192.168.0.101
Feb 23 21:18:14 dnsmasq[1724]: DHCP 192.168.0.101 is iMac1.localhost
Feb 23 21:18:26 dnsmasq[1724]: query[PTR] 101.0.168.192.in-addr.arpa from 192.168.0.101
Feb 23 21:18:26 dnsmasq[1724]: DHCP 192.168.0.101 is iMac1.localhost
Feb 23 21:18:38 dnsmasq[1724]: query[PTR] 101.0.168.192.in-addr.arpa from 192.168.0.101
Feb 23 21:18:38 dnsmasq[1724]: DHCP 192.168.0.101 is iMac1.localhost
 
The Mac is configured as "iMac1" both in the DNS section of the advanced networking settings as well as in the sharing settings section.  Again, everything seems to work but it would be great to understand this and fix this.
 
Thanks,
 
bluecar