def __init__(self, ba, ifi_family=None, ifi_type=None, ifi_index=None, ifi_flags=None, ifi_change=None):
super(ifinfomsg, self).__init__(ba)<EOL>if ifi_family is not None:<EOL><INDENT>self.ifi_family = ifi_family<EOL><DEDENT>if ifi_type is not None:<EOL><INDENT>self.ifi_type = ifi_type<EOL><DEDENT>if ifi_index is not None:<EOL><INDENT>self.ifi_index = ifi_index<EOL><DEDENT>if ifi_flags is not None:<EOL><INDENT>self.ifi_flags = ifi_flags<EOL><DEDENT>if ifi_change is not None:<EOL><INDENT>self.ifi_change = ifi_change<EOL><DEDENT>
Constructor.