+.. topic:: HOSTS_1024
+
+ Stateless or stateful traffic stream with 1024 client source IP4 addresses,
+ usually with 63 flow differing in source port number. Could be UDP or TCP.
+ If NAT is used, the clients are inside. Outside IP range can differ.
+
+.. topic:: HOSTS_4096
+
+ Stateless or stateful traffic stream with 4096 client source IP4 addresses,
+ usually with 63 flow differing in source port number. Could be UDP or TCP.
+ If NAT is used, the clients are inside. Outside IP range can differ.
+
+.. topic:: HOSTS_16384
+
+ Stateless or stateful traffic stream with 16384 client source IP4 addresses,
+ usually with 63 flow differing in source port number. Could be UDP or TCP.
+ If NAT is used, the clients are inside. Outside IP range can differ.
+
+.. topic:: HOSTS_65536
+
+ Stateless or stateful traffic stream with 65536 client source IP4 addresses,
+ usually with 63 flow differing in source port number. Could be UDP or TCP.
+ If NAT is used, the clients are inside. Outside IP range can differ.
+
+.. topic:: HOSTS_262144
+
+ Stateless or stateful traffic stream with 262144 client source IP4 addresses
+ usually with 63 flow differing in source port number. Could be UDP or TCP.
+ If NAT is used, the clients are inside. Outside IP range can differ.
+
+.. topic:: GENEVE4_1TUN
+
+ Test with 1 GENEVE IPv4 tunnel.
+
+.. topic:: GENEVE4_4TUN
+
+ Test with 4 GENEVE IPv4 tunnels.