Type of protocol.
This is a bit-map of possible conditions.
The various bit positions are:
l2Potocol layer 2 protocol
ipv4L3Protocol layer 3 protocol of IPv4
ipv6L3Protocol layer 3 protocol of IPv6
icmpProtocolType Type of ICMP protocol of IPv4
icmpProtocolCode Code of ICMP protocol of IPv4
icmpv6ProtocolType Type of ICMP protocol of IPv6
icmpv6ProtocolCode Code of ICMP protocol of IPv6
sourceL4Port port of layer 4 of source
destL4Port port of layer 4 of destination