+ BFD

= BFD, basic instantiation

from scapy.contrib.bfd import BFD
a = UDP(sport=3784, dport=3784)/BFD()
assert raw(a) == b'\x0e\xc8\x0e\xc8\x00 \x00\x00 \xc0\x03\x18\x11\x11\x11\x11"""";\x9a\xca\x00;\x9a\xca\x00;\x9a\xca\x00'

= BFD - dissection

assert BFD in UDP(raw(a))
