For more information, see Using Your Assigned Administrative Rights in Securing Users and Processes in Oracle Solaris 11.3.
# svcs -l svc:/network/ptp:default
# dladm show-linkprop -p ptp
# svccfg -s svc:/network/ptp:default setprop config/use_hw=true
# svcadm restart svc:/network/ptp:default