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Lists every adapter dynamically and identifies its nature — physical, wireless, virtual, VPN, Bluetooth or loopback. It never assumes an interface is called "Ethernet".
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Network Configuration Utility · v1.0.0
IP CHANGER
A small, reliable Windows tool for changing a network adapter's IPv4 configuration — built for commissioning technicians working next to PLCs, SCADA systems and industrial Ethernet, where a wrong or half-applied change is expensive.
01 The idea
Reliability over convenience.
On a commissioning site you re-address laptops between machine networks constantly — PLC subnet, camera network, X-ray, office. Doing it through Windows' settings is slow, error-prone, and unforgiving when a line is live.
IP CHANGER makes that one job fast and safe. Every change follows the same discipline: it validates the input, snapshots the current state, applies, then verifies against the adapter's real configuration afterwards — and if anything looks wrong, one click restores the previous setup.
It deliberately does not touch DNS, IPv6, firewall rules, or any adapter other than the one
you selected. It's fully offline, and the packaged IP_CHANGER.exe needs nothing installed —
perfect for a USB stick in a commissioning bag.
02 How a change is applied
Five steps, every time.
01
Validate
Fields check as you type; Apply stays disabled until the config is complete and valid.
02
Snapshot
Captures DHCP state, every IPv4 address, gateways and the adapter's identity.
03
Apply
Writes the new configuration to the selected adapter only — nothing else is touched.
04
Verify
Reads the adapter's real state back and confirms the change actually took effect.
05
Rollback
If anything fails or can't be verified, restore the snapshot — itself verified in turn.
03 Features
What it does.
Full live configuration
Shows the current IPv4 setup including all addresses when an adapter has more than one, plus IPv6 and DNS for reference.
Static ⇄ DHCP
Change address, subnet and gateway, or switch to DHCP — then it waits for a lease and reports the address actually obtained (and flags a 169.254.x.x "no DHCP server" result explicitly).
Identity-aware presets
Saved presets record the adapter's GUID and MAC — not just its name. It matches a renamed adapter, and refuses to apply a preset to the wrong interface.
Snapshot & rollback
Every change is reversible. On crash mid-operation, the next start detects it and offers to check or restore — it never rolls back automatically.
Import / export & dry run
Presets export to validated JSON (treated purely as data, never executed). Dry run previews exactly what would change without touching anything.
04 Under the hood
Engineered like the plants it serves.
GUI layer
- PySide6 / Qt
- Adapter panel
- Presets & history
- Background workers
Network engine
- Adapter manager
- IP manager
- Validator & verifier
- Win API + PowerShell
Storage & safety
- Local DB + journal
- History & settings
- UAC self-elevation
- pytest suite
LanguagePython 3.12+
UI frameworkPySide6 (Qt for Python)
PackagingPyInstaller → single .exe
PlatformWindows 10 / 11 (64-bit)
Network accessNone — fully offline
LicenseGPL-3.0 · open source
05 Screenshots
The application in use.
06 Get it
Explore the code.
IP CHANGER is open source under GPL-3.0. Browse the source, the manual test plan and the implementation specs, or build the executable yourself.