IP_FLAG_HEADER_INCLUDED
(protocol->flags & IP_FLAG_HEADER_INCLUDED) != 0);
protocol->flags |= IP_FLAG_HEADER_INCLUDED;
protocol->flags &= ~IP_FLAG_HEADER_INCLUDED;
headerIncluded = (protocol->flags & IP_FLAG_HEADER_INCLUDED) != 0;
if (protocol != NULL && (protocol->flags & IP_FLAG_HEADER_INCLUDED)) {