# File lib/specinfra/command/linux/base/interface.rb, line 15
    def check_has_ipv4_address(interface, ip_address)
      ip_address = ip_address.dup
      if ip_address =~ /\/\d+$/
        ip_address << " "
      else
        ip_address << "/"
      end
      ip_address.gsub!(".", "\\.")
      "ip -4 addr show #{interface} | grep 'inet #{ip_address}'"
    end