code: def validate_webagg_address(s):
      if s is not None:
          import socket
  
          try:
              socket.inet_aton(s)
          except socket.error as e:
              raise ValueError(
                  "'webagg.address' is not a valid IP address"
              )
          return s
      raise ValueError("'webagg.address' is not a valid IP address")
  
imports: from __future__ import absolute_import, division, print_function
  import six
  from functools import reduce
  import operator
  import os
  import warnings
  import re
  from matplotlib import cbook, testing
  from matplotlib.cbook import mplDeprecation, deprecated, ls_mapper
  from matplotlib.fontconfig_pattern import parse_fontconfig_pattern
  from matplotlib.colors import is_color_like
  from cycler import Cycler, cycler
label_desc: Use image node_id 41 for calling a global function with example usage: validate_webagg_address(s) and returns: s