‘configure_networking’ was moved to the background in commit a3b7a7d6. According to debian/changelog it was meant to be a fix for #514213 and #524728. I'd say the proper fix would be to follow Simon McVittie's suggestion [0] and split the dropbear package as follows:
* dropbear-bin (executable, private libraries if any) * dropbear (init integration goo) Depends: dropbear-bin * dropbear-initramfs Depends: dropbear-bin, Suggests: dropbear That way dropbear users that are not using the cryptroot remote unlocking feature would simply not install dropbear-initramfs. -- Guilhem. [0] https://lists.debian.org/debian-devel/2015/05/msg00685.html
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