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Bug 758032 - net-analyzer/macchanger-1.7.0_{p5,p4} exit status regression on same MAC
Summary: net-analyzer/macchanger-1.7.0_{p5,p4} exit status regression on same MAC
Status: UNCONFIRMED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Robin Johnson
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-12-02 10:02 UTC by Jaak Ristioja
Modified: 2020-12-02 23:49 UTC (History)
2 users (show)

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Runtime testing required: ---

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Description Jaak Ristioja 2020-12-02 10:02:36 UTC 
Something changed in the behavior of net-analyzer/macchanger when upgrading from 1.7.0 to 1.7.0_p5_p4, breaking my networking scripts which basically did things  like

    macchanger -m <some MAC> eth0 && dhclient eth0

because I need a different MAC for some networks, and the currently permament mac for others.

I tracked this down to the following regression:

With 1.7.0_p5_p4 when I try to change the MAC address to what it was earlier, it fails with exit status 1:

    # macchanger -m 98:fa:1b:5a:8e:4f eth0
    Current MAC:   98:fa:1b:5a:8e:4f (unknown)
    Permanent MAC: 98:fa:1b:5a:8e:4f (unknown)
    New MAC:       98:fa:1b:5a:8e:4f (unknown)
    It's the same MAC!!
    # echo $?
    1

Whereas with 1.7.0, it resulted in the exact same output, but an error status of 0:

    # macchanger -m 98:fa:1b:5a:8e:4f eth0
    Current MAC:   98:fa:1b:5a:8e:4f (unknown)
    Permanent MAC: 98:fa:1b:5a:8e:4f (unknown)
    New MAC:       98:fa:1b:5a:8e:4f (unknown)
    It's the same MAC!!
    # echo $?
    0

Using macchanger --permanent also seems to have the same issue.

Downgrading back to 1.7.0 fixes this.

I think this may be caused by "${WORKDIR}"/debian/patches/verify-changed-MAC.patch
Comment 1 Jaak Ristioja 2020-12-02 10:07:14 UTC 
Sorry, I meant "${WORKDIR}"/debian/patches/check-random-device-read-errors.patch