82 def fail(cond, msg):  function
96 def cmd(cmd, shell=True, include_stderr=False, background=False, fail=True):  argument
111 def cmd_result(proc, include_stderr=False, fail=False):  argument
143 def tool(name, args, flags, JSON=True, ns="", fail=True, include_stderr=False):  argument
168 def bpftool(args, JSON=True, ns="", fail=True, include_stderr=False):  argument
211                       fail=True, include_stderr=False):  argument
225 def ip(args, force=False, JSON=True, ns="", fail=True, include_stderr=False):  argument
231 def tc(args, JSON=True, ns="", fail=True, include_stderr=False):  argument
235 def ethtool(dev, opt, args, fail=True):  argument
473     def set_mtu(self, mtu, fail=True):  argument
478                 fail=True, include_stderr=False):  argument
486                   fail=True, include_stderr=False):  argument
546                       fail=True, include_stderr=False):  argument
563                            fail=True, include_stderr=False):  argument
580     def set_ethtool_tc_offloads(self, enable, fail=True):  argument