tmnxOamBuildPktIpCtlEntry contains the definition of one IP header used by the OAM Egress Finder. Fields that influence the routing by SROS of a packet containing an IP header (e.g. Source IP Address) are present. The other IP header fields (e.g. Time to Live) are absent. A row is created by SROS when: 1. tmnxOamBuildPktHdrType is set to 'ipv4'|'ipv6', OR 2. A tmnxOamBuildPktHdrOvrCtlTable table row is created with a tmnxOamBuildPktHeaderNum index which refers to a header with type 'ipv4'|'ipv6'. A row is destroyed by SROS when: 1. A tmnxOamBuildPktHdrCtlTable row with tmnxOamBuildPktHdrType = 'ipv4'|'ipv6' is destroyed, OR 2. A tmnxOamBuildPktHdrOvrCtlTable row which refers to a header with type 'ipv4'|'ipv6' is destroyed. A row created using creation clause 1, above, has the index object tmnxOamBuildPktNumOrZero=0. The zero indicates the IP header is a base definition (not an override). A row created using creation clause 2, above, has tmnxOamBuildPktNumOrZero set to the tmnxOamBuildPktNum index of the parent tmnxOamBuildPktHdrOvrCtlTable row. The following example values for this table show the definition of a base Source IP Address field for header 1, and two overrides. Pkt Num Or Zero Header Num Source IP Address 0 1 1::2 10 1 2::3 255 1 3::4