The indirection via /etc/resolvconf/run dates from the era before /run/.
I introduced resolvconf in 2003 as part of a larger effort to make it
possible to run Debian with a read-only root filesystem[1] but the
project to introduce the /run/ tmpfs into Debian base failed due to lack
of consensus about the need for it[2][3] and disagreement about what to
call it[4]. (The references are just a few examples out of several long
exhausting threads.) Not being even a Debian Developer myself, I shelved
the controversial /run project[5] and carried on developing resolvconf
which still needed some location for its state files, preferably on a
tmpfs. The best available location at first was /dev/shm/. Later
/lib/init/rw/ was introduced and I converted resolvconf to use that by
default. I knew that /dev/shm/ was a controversial and probably
temporary solution and I also wanted to accomodate people who didn't
want to use any tmpfs at all, so I made the ultimate location of the
state directory configurable by means of the symbolic link
/etc/resolvconf/run. When /run/ became part of the Debian base system in
2011[6] the need for this configurability disappeared. Nowadays there is
no good reason not to keep the files under /run/resolvconf/.
Accordingly, debian/NOTES already includes the following TODO list.
---------------------------
MAINTAINER NOTES
for resolvconf
TODO
----
* File bug reports against all packages containing suppliers of nameserver
information, asking each to add a resolvconf packaging-event hook script.
Still to be submitted: dhcpcd5, pump, udhcpc
* In Jessie+1, drop the use of /etc/resolvconf/run; use /run/resolvconf
directly.
--------------------------
When I have a few free hours I will take care of the second item.
Writing maintainer script code to transition existing resolvconf-using
machines to the new setup without breaking anything is not entirely
trivial. :)
[1]https://lists.debian.org/debian-devel/2003/04/msg02057.html
[2]https://lists.debian.org/debian-devel/2003/05/msg00280.html
[3]https://lists.debian.org/debian-devel/2003/05/msg00247.html
[4]https://lists.debian.org/debian-devel/2003/04/msg00158.html
[5]https://lists.debian.org/debian-devel/2003/05/msg01479.html
[6]https://wiki.debian.org/ReleaseGoals/RunDirectory
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https://bugs.launchpad.net/bugs/1453185
Title:
resolvconf: updates are not enabled right after installation
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