code: func CompareIPNet(a, b *net.IPNet) bool {
  	if a == b {
  		return true
  	}
  	if a == nil || b == nil {
  		return false
  	}
  	return a.IP.Equal(b.IP) && bytes.Equal(a.Mask, b.Mask)
  }
docs: // CompareIPNet returns equal if the two IP Networks are equal