Hi, I'm the LTSP developer that added the "manual" stanza a few years
ago (r1944).
I've answered in
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=810934#10 about it,
but I should probably add a comment here as well as this bug sees the
issue from a different view.
The "manual" stanza isn't there just for network-manager. LTSP chroots
don't have network-manager installed by default.
A netbooted system needs these 2 things from ifupdown:
1) the scripts at /etc/network/if-up.d to get executed for the boot
interface,
2) while preventing the boot interface from being DOWNed at shutdown.
You mention that using "manual" is the wrong approach to accomplish
this. Could you please advise us on how to notify ifupdown to do those 2
things in a backwards/forward compatible way?
