ypbind won't bind to anything
(2014-06-16)
Problem
I have a CentOS 6 NIS master server that won't ypbind to anything.
I have a seemingly identical CentOS6 NIS slave server that will ypbind to the master or to itself, which satisfies me that the problem lies with the client, not the server.
Kinda VooDoo Solution
I created /etc/sysconfig/ypbind with this content:
OTHER_YPBIND_OPTS="-no-dbus"
Rebooted/reset everything and this appears to be the last change I made and now it works.
Note that the seemingly-identical NIS slave does not need this configuration, so I suspect I actually changed something else to make it work… but I record this here so that if this voodoo is needed in the future I can find it.