Le 01/08/2019 à 19:58, Pascal Hambourg a écrit :
Le 01/08/2019 à 18:18, David Wright a écrit :I think that a lot of people install resolvconf (deliberately or incidentally) without really understanding what it's for or what it does. Then, because most people naturally check the contents of /etc/resolv.conf, they indulge in all sorts of cargo-cult behaviour to pummel it into submission; the most extreme I've seen being editing followed by chattr +i.AFAIK it is also the most inefficient : upon installation, resolvconf replaces the regular file /etc/resolv.conf with a symlink pointing to a volatile temporary file in /run (tmpfs), so the immutable attribute has no effect if set on the symlink and will be reset at the next boot if set on the target file in /run.
Thinking twice and testing, it appears that you cannot even set file attributes in tmpfs nor on a symlink.