[Bug 1618726] [NEW] ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Richard Laager (rlaager):

This is a trivially reproducible crash in ifup/ifdown.

Steps to reproduce:
1) echo no-scripts foo bar >> /etc/network/interfaces
2) ifup baz

Expected results:
Unknown interface baz

Actual results:
Segmentation fault (core dumped)

It's irrelevant whether the second interface is on the same no-scripts line or separate one. This will crash just the same:
echo no-scripts foo >> /etc/network/interfaces
echo no-scripts bar >> /etc/network/interfaces

** Affects: ifupdown (Ubuntu)
     Importance: Undecided
         Status: New

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ifup & ifdown crash if multiple interfaces are listed in no-scripts
https://bugs.launchpad.net/bugs/1618726
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