diffServMultiFieldClfrProtocol 1.3.6.1.2.1.97.1.2.6.1.9

The IP protocol to match against the IPv4 protocol number or the IPv6 Next- Header number in the packet. A value of 255 means match all. Note the protocol number of 255 is reserved by IANA, and Next-Header number of 0 is used in IPv6.