On Solaris 10 NIS unable to remiain bound to localhost after 188.8.131.520 upgrade.
Product Defect Description 24469:
When the forked child for ypcat group dies SMF on solaris 10 kills and restarts vasypd.
Waiting fix in future 4.0.2 maintenance release
This behaviour is not seen in QAS version 184.108.40.206