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Lexmark MS421

Lexmark MS421

Printer Does Not Retain the Original or Customized Hostname After a Firmware Update


Affected products



in the title section above.

What you will see

After updating the printer firmware, without any user intervention, the device hostname is switched to a 'DHCP-<printer IP address>' format.

As an example, a device with an IP address and having a hostname set to 'PrinterABC', after a firmware update, the hostname will change from 'PrinterABC' to ‘DHCP-’.


Although this is not a Lexmark issue, a firmware fix is available in EC xxxxx.051.050 or newer firmware release found in the Lexmark support site.

The 'DHCP-<printer IP address>' hostname is a valid hostname.

Should the issue is not resolved after updating the firmware, please contact Lexmark technical support for further assistance.


There is a bug in certain DHCP servers made by Infoblox that when combined with Lexmark products running firmware xxxxx.050.yyy or xxxxx.051.yyy, causes the hostname to be set to a ‘DHCP-<IP Address>’ format where <IP Address> is the Lexmark device IP address. This issue is not exposed in the older xxxx.04z.yyy firmware releases.

Contacting Lexmark

If you need additional assistance, please close this browser tab or go to the Lexmark support site, type your printer model and locate

Get in Touch with Lexmark! for contact information.
When calling for support, you will need the following:

  • Name and version of the solution
  • Affected printer model/s
  • Printer serial number

Please be near the product/s described in this article to expedite the support process and reduce callbacks.


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