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Zafer Balkan edited this page Apr 17, 2026 · 6 revisions

dzmac Help

This help content is adapted from the original TMAC help and limited to features currently supported by dzmac.

How to change the MAC address of a network connection

  1. Select the target network connection in the main list.
  2. In Change MAC Address, enter a MAC address in hexadecimal format.
  3. Optional: click Random MAC Address to generate one.
  4. Optional: choose a vendor/manufacturer in the dropdown first, then generate a random MAC.
  5. Optional: enable automatic adapter reset/restart to apply changes.
  6. Click Change Now!.

Why does setting the first octet to 02 help with some Wi-Fi MAC changes?

Some wireless adapter drivers may reject MAC changes unless the address is marked as locally administered. Setting the first octet to 02 sets the local-administered bit (for example, 02:11:22:33:44:55), which often works as a practical workaround on adapters that ignore other values. Use the Use '02' as first octet of MAC address checkbox to do it on GUI or -r02 on CLI. If the change still does not appear, manually disable and re-enable the adapter (or use-re) and verify the active MAC again.

How to restore the original MAC address

  1. Select the target network connection.
  2. In Change MAC Address, click Restore Original.

How to enable/disable a network connection

  1. Select the network connection in the list.
  2. Toggle the Enabled checkbox for that row.

How to refresh the network connection list

  • Use Options > Refresh, or
  • Press F5.

How to enable/disable DHCPv4 on a connection

  1. Select the network connection.
  2. Use Action > DHCPv4 > DHCPv4 Enabled to toggle DHCPv4.

Note: dzmac preserves the current IPv4 configuration when switching DHCPv4 modes (safe-by-default behavior).

How to release/renew an IPv4 DHCP lease

  1. Select the network connection.
  2. Use Action > DHCPv4 > Release IP or Renew IP.
  3. Wait for the operation to complete.

Command-line interface (CLI)

Usage:

dzmac -n network_connection_name [options]

MAC address options

  • -m [mac_address] set MAC address (empty value restores original)
  • -nm [mac_address] alias behavior equivalent to -m
  • -r random MAC from vendor list
  • -nr random MAC from vendor list (alias behavior)
  • -r02 random locally-administered MAC (02 first octet)
  • -nr02 random locally-administered MAC (alias behavior)

IPv4 options

  • -i ip/mask[,ip/mask...] set IPv4 addresses
  • -g gateway/metric[,gateway/metric...] set IPv4 gateways
  • -d dns[,dns...] set IPv4 DNS servers
  • -h enable DHCPv4
  • -rl release DHCPv4 lease
  • -rn renew DHCPv4 lease

Other options

  • -s silent mode flag
  • -re disable/enable adapter (reset)
  • -di disable adapter
  • -en enable adapter
  • -ro restore original MAC record used by dzmac
  • -help display CLI help

CLI examples

Apply a specific MAC and reset adapter:

dzmac -n "Ethernet" -m 00:01:02:03:04:05 -re

Apply random MAC (locally administered) and reset adapter:

dzmac -n "Wi-Fi" -r02 -re

Enable DHCPv4 on a connection:

dzmac -n "Ethernet" -h

Release then renew DHCPv4 lease:

dzmac -n "Ethernet" -rl
dzmac -n "Ethernet" -rn

Features intentionally not supported in dzmac

The following TMAC help topics are intentionally out of scope for the current dzmac milestone:

  • DHCPv6 management (-h6, -rl6, -rn6, and other IPv6 write operations)
  • Internet Explorer / HTTP proxy management (-pxy and GUI proxy settings)
  • Preset import/export or preset-file workflows (.tpf, -f, -p)
  • TMAC installer command-line help topics

Notes

The content is derived from TMAC Help Page.

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