In Oracle Solaris 11, you no longer edit the /etc/resolv.conf file to make persistent changes to a DNS client. All DNS client configuration is managed by the dns/client SMF service. For information about how to enable a DNS client, see How to Enable a DNS Client in Configuring and Administering Network Components in Oracle Solaris 11.2 .
# svcs -xv dns/client:default
# more /var/svc/log/network-dns-client:default.log
# svcprop -p config/nameserver dns/client
# svcprop -p config/search dns/client
# svcprop -p config dns/client