Solaris 10 ipnodes caveat
On Solaris 10, IPv4 addresses are looked up in /etc/inet/ipnodes before /etc/inet/hosts.
From /etc/nsswitch.dns:
# Note that IPv4 addresses are searched for in all of the ipnodes databases
# before searching the hosts databases.
This means that if you have the following in /etc/nsswitch.conf (which is the default from /etc/nsswitch.dns)
ipnodes: files dns
hosts: files dns
the IPv4 resolution order will be:
1. /etc/inet/ipnodes
2. DNS (name servers in /etc/resolv.conf)
3. /etc/hosts
4. DNS (name servers in /etc/resolv.conf)
This may confuse administrators accustomed to placing IPv4 addresses in /etc/hosts to override resource records in DNS.
The easiest way to check /etc/inet/ipnodes and /etc/hosts before DNS is to remove dns from the /etc/nsswitch.conf ipnodes: entry.
ipnodes: files
hosts: files dns
The IPv4 resolution order will be:
1. /etc/inet/ipnodes
2. /etc/hosts
3. DNS (name servers in /etc/resolv.conf)
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Last modified: 2007/12/18