Comment 1 for bug 965671

Turns out this is actaully euca defaulting the value of the flag to tcp:

40 Options = [Param(name='protocol', short_name='P', long_name='protocol',
 41 optional=True, ptype='string', default='tcp',
 42 choices=['tcp', 'udp', 'icmp', '6', '17', '1'],
 43 doc='The protocol.'),