OpenIndiana 151a is by default installed to use NWAM and DHCP dynamic IPs. In many situations it would be preferred to set up a static IP for the server, something which is difficult to do through nwam.
Using su, sudo or pfexec to acquire the required privileges:
# svcadm disable svc:/network/physical:nwam
# svcadm enable svc:/network/physical:default