HN
login
macOS 27: ifconfig command no longer prints hardware MAC address

Just a quick PSA. A handful of my scripts broke today after installing macOS 27. Turns out they decided to redact the interface hardware ether/MAC addresses, all of them report 02:00:00:00:00:00 (…unless you run…

7 points•luckman212•4 days ago•14 comments•
#mac#macos#hardware#command#prints#ifconfig#longer#address
Just a quick PSA. A handful of my scripts broke today after installing macOS 27. Turns out they decided to redact the interface hardware ether/MAC addresses, all of them report 02:00:00:00:00:00

(…unless you run with "sudo")

Luckily, you can still get the MAC addresses with

    networksetup -getmacaddress en0

14 comments

luckman2122 days ago
I filed a bashbug: https://savannah.gnu.org/bugs/index.php?68722
asiliev202 days ago
Who needs a physical MAC address when you can just have a spiritual connection to the iCloud?
luckman2122 days ago
27.0.1 did not fix it, and I reproduced it on 2 more Macs, one was literally factory reset, just installed a fresh macOS 27, installed Homebrew, installed Bash5, ran ifconfig .... bug reproduced
luckman2122 days ago
Interestingly, running `ifconfig` from a Zsh shell still does show MAC addresses

Read the full thread on Hacker News →

Related stories