@WithDesc("IPv4 address")
def _CheckCIDRAddrNotation(value):
  try:
    ipaddr.IPv4Address(value)
  except ipaddr.AddressValueError:
    return False
  return True
returns indices to residual array with k outliers removed
dataset/ETHPy150Open ganeti/ganeti/lib/ht.py/_CheckCIDRAddrNotation--crossover with--dataset/ETHPy150Open statsmodels/statsmodels/examples/incomplete/wls_extended.py/index_trim_outlier