macOS 27: ifconfig command no longer prints hardware MAC address

4 comments

• lapcat 18 hours ago ago

  I can't reproduce this.

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  • luckman212 8 hours ago ago

    It seems to only affect Bash 5.3.20 (Homebrew) - very odd:

        % /bin/bash --version
        GNU bash, version 3.2.57(1)-release (arm64-apple-darwin26)
        
        % /opt/homebrew/bin/bash --version
        GNU bash, version 5.3.20(1)-release (aarch64-apple-darwin27.0.0)
        
        % zsh -c '/sbin/ifconfig en0 | grep ether'
        ether d0:11:e5:1a:27:7a
        
        % /bin/bash -c '/sbin/ifconfig en0 | grep ether'
        ether d0:11:e5:1a:27:7a
        
        % /opt/homebrew/bin/bash -c '/sbin/ifconfig en0 | grep ether'
        ether 02:00:00:00:00:00

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    • hrbrmstr 7 hours ago ago

      it works fine in system bash for me

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      • luckman212 5 minutes ago ago

        Yes it works in my system bash too (see above) - seems to be some sort of obscure Bash bug...