77 def fail(cond, msg):  function
89 def cmd(cmd, shell=True, include_stderr=False, background=False, fail=True):  argument
104 def cmd_result(proc, include_stderr=False, fail=False):  argument
136 def tool(name, args, flags, JSON=True, ns="", fail=True, include_stderr=False):  argument
161 def bpftool(args, JSON=True, ns="", fail=True, include_stderr=False):  argument
206                       fail=True, include_stderr=False):  argument
220 def ip(args, force=False, JSON=True, ns="", fail=True, include_stderr=False):  argument
226 def tc(args, JSON=True, ns="", fail=True, include_stderr=False):  argument
230 def ethtool(dev, opt, args, fail=True):  argument
394     def set_mtu(self, mtu, fail=True):  argument
399                 fail=True, include_stderr=False):  argument
407                   fail=True, include_stderr=False):  argument
467                       fail=True, include_stderr=False):  argument
484                            fail=True, include_stderr=False):  argument
501     def set_ethtool_tc_offloads(self, enable, fail=True):  argument