From: Rob Windsor (windsor@warthog.com)
Date: Wed May 17 2006 - 19:21:38 EDT
Stopping NSCD and running truss(1m) on the process indicates that the
resolver routines reference ipnodes(4) and then DNS, skipping hosts(4)
entirely.
All documentation indicates that this is a bug.
Workaround is to whack ipnodes(4) and make it a symlink pointing to
hosts(4).
Bad Sun, no cookie!
Thanks to Aaron Lineberger, Ric Anderson, and Christopher McNabb for
their input.
Rob++
Rob Windsor wrote:
> Here's the basic problem:
>
>>: sol10; egrep '^hosts' /etc/nsswitch.conf
>>hosts: files dns
>>
>>: sol10; ll /etc/hosts
>>lrwxrwxrwx 1 root root 12 Mar 31 13:57 /etc/hosts -> ./inet/hosts
>>
>>: sol10; ll /etc/inet/hosts
>>-r--r--r-- 1 root sys 3222 May 17 11:10 /etc/inet/hosts
>>
>>: sol10; grep 10.108.20.97 /etc/inet/hosts
>>10.108.20.97 adminbox adminbox.mis.mycompany.com
>>
>>: sol10; cat /etc/resolv.conf
>>domain mis.mycompany.com
>>search mis.mycompany.com mycom.com
>>nameserver 10.108.20.81
>>
>>: sol10; host 10.108.20.97
>>97.20.108.10.in-addr.arpa domain name pointer adminbox.MIS.mycompany.com.
>>
>>: sol10; ping -s 10.108.20.97
>>PING 10.108.20.97: 56 data bytes
>>64 bytes from adminbox.MIS.mycompany.com (10.108.20.97): icmp_seq=0. time=0.622
>>ms
>>^C
>>----10.108.20.97 PING Statistics----
>>1 packets transmitted, 1 packets received, 0% packet loss
>>round-trip (ms) min/avg/max/stddev = 0.622/0.622/0.622/NaN
>
>
> Items to note are that the PTR record for 10.108.20.97 returns
> adminbox.MIS.mycompany.com (note caps). The hosts file "should"
> shortcut the lookup and simply return "adminbox" on the ping.
--
Internet: windsor@warthog.com __o
Life: Rob@Carrollton.Texas.USA.Earth _`\<,_
(_)/ (_)
"They couldn't hit an elephant at this distance."
-- Major General John Sedgwick
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