This morning at a friend's house we saw an unusual situation I hope someone can explain.  This is on one computer out of a number running on the LAN.  The connections are a mix of wired and wireless but all through a Linksys WRT54GL running HyperWRT 
2.1b1 + Thibor15c.  Dnsmasq on the router is enabled and providing dhcp services, local DNS and DNS passthrough.  This is the 5th house at which we have installed this setup.  This issue is only a problem for the one machine (call it hplaptop though any names listed here are fake) at this 5th house.  in a terminal on hplaptop (running Ubuntu 
6.10):<br><ul><li>ping hpdesktop gives message of ping: unknown host hpdesktop</li><li>tracepath and traceroute6 give the same message</li><li>nslookup and dig both show hpdesktop at <a href="http://192.168.1.109">192.168.1.109
</a></li><li>all other machines on the LAN are able to ping hpdesktop by name</li></ul>BTW, the name hpdesktop was new (changed this morning).&nbsp; Host and lmhost files were cleaned for all machines and machines rebooted.&nbsp; The dhcp client table on the router shows all machines and their names (not important except to show that all machines were including their names in the dhcp request).&nbsp; It would appear that on hplaptop, the name resolution used by ping, tracepath, and traceroute is NOT being done through a DNS call.&nbsp; Any clues would be appreciated.
<br><br>-- <br>Be who you are and say what you feel, because those who mind don&#39;t matter and those who matter don&#39;t mind.&nbsp;&nbsp;- Dr. Seuss