Basics

5 MIN READ

Apr 19, 2026

ipconfig vs ifconfig: Windows and Unix Address Tools

Windows ipconfig surfaces DHCP lease state and the DNS client resolver cache; Unix ifconfig is legacy—use iproute2 ip/link/addr on Linux for the authoritative view of addresses, routes, and neighbor tables.

ipconfig (Windows)

ipconfig /all lists adapters, DHCP enabled flag, lease obtain/expire times, default gateways, and DNS servers registered by the stack. ipconfig /flushdns clears the local resolver cache—useful after DNS cutovers but irrelevant for pure routing issues.

ifconfig vs ip (Linux)

Classic ifconfig still exists on some systems but is superseded by ip addr, ip link, and ip route from iproute2. The ip suite understands policy routing, VLAN subinterfaces, and tunnels consistently—scripts should not rely on ifconfig-only parsing on modern distros.

Apple macOS

ifconfig remains common for quick checks; networksetup handles service order and proxy settings at a higher layer.

When people confuse the two

They sound similar but live on different OS families—there is no ipconfig binary on stock Linux, and Windows has no first-party ifconfig (use WSL or third-party ports if you see one).

Frequently Asked Questions

Q.What is the Linux equivalent of ipconfig?

Combine `ip addr`, `ip route`, and `resolvectl status` (or systemd-resolve) for the same information spread across ipconfig /all—there is no single 1:1 command.

Q.Does ifconfig show all addresses ip addr would?

Often yes for basic IPv4/IPv6, but secondary labels, policy routes, and DOWN interfaces may differ in presentation—use `ip -br a` in automation.

Q.Why does ipconfig show a different DNS server than my router?

Windows may register DoH/secure DNS settings or VPN virtual adapters that prepend resolvers—read adapter order in `Get-NetIPConfiguration`.

Q.Should I still learn ifconfig for exams or older docs?

Recognize the output, but write new material with iproute2 syntax—industry interviews and cloud images expect `ip` and `ss`.

Q.Does ipconfig /release break Wi-Fi permanently?

No—it drops DHCP leases until /renew or the stack auto-renews; on remote headless systems avoid release without console access.

Q.How do I flush DNS on Linux instead of ipconfig?

Depends on the resolver: `resolvectl flush-caches` for systemd-resolved, restart nscd/unbound, or clear application-level caches—there is no single Windows analogue.

Q.Why do tutorials still use ifconfig on Ubuntu?

Legacy habit; net-tools may not be installed by default. Install `iproute2` (already present) and drop net-tools dependency in scripts.

Q.Which tool shows Windows routing tables?

`route print` or PowerShell `Get-NetRoute`—ipconfig only hints at gateways; use routing commands for full tables.

TOPICS & TAGS

ipconfig vs ifconfigip command vs ifconfigWindows ipconfig DHCPLinux ip addrdisplaydns