85 def fail(cond, msg):  function
99 def cmd(cmd, shell=True, include_stderr=False, background=False, fail=True):  argument
114 def cmd_result(proc, include_stderr=False, fail=False):  argument
146 def tool(name, args, flags, JSON=True, ns="", fail=True, include_stderr=False):  argument
173 def bpftool(args, JSON=True, ns="", fail=True, include_stderr=False):  argument
218                       fail=True, include_stderr=False, dev_bind=None):  argument
234 def ip(args, force=False, JSON=True, ns="", fail=True, include_stderr=False):  argument
240 def tc(args, JSON=True, ns="", fail=True, include_stderr=False):  argument
244 def ethtool(dev, opt, args, fail=True):  argument
413     def set_mtu(self, mtu, fail=True):  argument
418                 fail=True, include_stderr=False):  argument
426                   fail=True, include_stderr=False):  argument
486                       fail=True, include_stderr=False):  argument
503                            fail=True, include_stderr=False):  argument
520     def set_ethtool_tc_offloads(self, enable, fail=True):  argument