:param payload_data: the payload data in the packet.
:type payload_data: str
- :returns: none
:raises RuntimeError: If the vxlan protocol field verify fails.
"""
# get the vxlan packet and check it
:param test_type: the functional test type.
:type payload_data: str
:type test_type: str
- :returns: none
:raises RuntimeError: If the vxlangpe and nsh protocol
field verify fails.
"""
:type ether: scapy.Ether
:type frame_size: Integer
:type test_type: str
- :returns: none
:raises RuntimeError: If the packet field verify fails.
"""