dladm man page documents fields which are not part of output
dladm man page documents the following for option -H
dladm show-phys [-m | -H | -P] [[-p] -o field[,...]] [phys-link] Show the physical device and attributes of all physical links, or of the named physical link. Without -P, only physical links that are available on the running system are displayed. -H Show hardware resource usage, as returned by the NIC driver. Output from -H displays the following elements: LINK A physical device corresponding to a NIC driver. GROUP A collection of rings. GROUPTYPE RX or TX. All rings in a group are of the same group type. RINGS A hardware resource used by a data link, subject to assignment by a driver to different groups. CLIENTS MAC clients that are using the rings within a group.
However the actual output is:
root@oi:~# dladm show-phys -H -P LINK RINGTYPE RINGS CLIENTS e1000g0 RX 0 <default,mcast>,vnic0,e1000g0,vn4,vn3,vn2,vn1,vn0
Either the man page is wrong or the dladm command output. If the man page is wrong, then GROUP and GROUPTYPE has to be removed.