def p_range_stmt(p):
    """ range_stmt : RANGE range_addr_stmt SEMICOLON
                   | RANGE DYNAMIC_BOOTP range_addr_stmt SEMICOLON
    """
    if len(p) > 4:
        p[0] = {p[1]: p[3]}
    else:
        p[0] = {p[1]: p[2]}
