def get_default_if():
f = open ('<STR_LIT>', '<STR_LIT:r>')<EOL>for line in f:<EOL><INDENT>words = line.split()<EOL>dest = words[<NUM_LIT:1>]<EOL>try:<EOL><INDENT>if (int (dest) == <NUM_LIT:0>):<EOL><INDENT>interf = words[<NUM_LIT:0>]<EOL>break<EOL><DEDENT><DEDENT>except ValueError:<EOL><INDENT>pass<EOL><DEDENT><DEDENT>return interf<EOL>
Returns the default interface