6034024dad
ping has the option to add the (deprecated) TOS byte using the -z option. Adding the same option, with the same (deprecated) Traffic Class Byte (nowadays actually DSCP and ECN fields) to ping6 to validate proper QoS processing in network switches. Reviewed by: tuexen MFC after: 2 weeks Sponsored by: NetApp, Inc. Differential Revision: https://reviews.freebsd.org/D26384