search csv file for ip addresses to make a list

import csv

def search_ip(file_name, ip_address):
  result = []
  with open(file_name, 'r') as csvfile:
    reader = csv.reader(csvfile, delimiter=',')
    for row in reader:
      if ip_address in row:
          result.append(row)
  return result
  
search_ip('file.csv', '1.1.1.1')