# ONC RPC ## ONC RPC (Sun RPC) attributes This document defines attributes for [ONC RPC (Sun RPC)](https://datatracker.ietf.org/doc/html/rfc5531) | Attribute | Type | Description | Examples | Stability | |---|---|---|---|---| | `onc_rpc.procedure.name` | string | ONC/Sun RPC procedure name. | `OPEN`; `READ`; `GETATTR` |  | | `onc_rpc.procedure.number` | int | ONC/Sun RPC procedure number. | |  | | `onc_rpc.program.name` | string | ONC/Sun RPC program name. | `portmapper`; `nfs` |  | | `onc_rpc.version` | int | ONC/Sun RPC program version. | |  |