|zph_tos||Allows you to select a TOS/Diffserv value to mark local and peer
hits. Read tcp_outgoing_tos for details/requirements about TOS.
Default: 0 (disabled).
|zph_tos_peer||ON|OFF - Set this to off if you want only local hits to be marked (disables hits from sibling caches being TOS marked).|
Default: ON (siblings' hits treated as local hits).