add resolver

# zonecfg -z <uuid>
zonecfg:uuid> add attr 
zonecfg:uuid:attr> set name=resolvers
zonecfg:uuid:attr> set type=string
zonecfg:uuid:attr> set value=8.8.8.8,8.8.4.4
zonecfg:uuid:attr> end
zonecfg:uuid> verify
zonecfg:uuid> commit
zonecfg:uuid> exit
# vmadm reboot <uuid>

update resolver

# zonecfg -z <uuid>
zonecfg:uuid> remove attr name=resolvers

zonecfg:uuid> add attr 
zonecfg:uuid:attr> set name=resolvers
zonecfg:uuid:attr> set type=string
zonecfg:uuid:attr> set value=8.8.8.8,8.8.4.4
zonecfg:uuid:attr> end
zonecfg:uuid> verify
zonecfg:uuid> commit
zonecfg:uuid> exit
# vmadm reboot <uuid>