In Solaris 10 I can configure (and audit) the arp_cleanup_interval variable using the following command:
$ ndd -get /dev/arp arp_cleanup_interval
300000
In Solaris 11 (Express and Release) the same command returns an "Unknown property" error:
$ ndd -get /dev/arp arp_cleanup_interval
operation failed: Unknown property
Does anyone know if this variable has changed, or been removed from Solaris 11?