Re: Writing resolv.conf issues with broken symlink

[Andrei Borzenkov <arvidjaar gmail com>]

31.05.2018 22:02, Matthew Starr пишет:
> I am building NetworkManager 1.8.0 using buildroot with SysV init on an ARM embedded device.  Buildroot has 
> the /etc/resolv.conf file as a symlink that points to /tmp/resolv.conf.  When I use NetworkManager with 
> this resolv.conf symlink configuration, DNS lookups do no work because NetworkManger is not writing to the 
> resolv.conf file or the file pointed to by the symlink.
>
> I tried updating the NetworkManager.conf file to include "rc-manager=file" since the man page states that 
> NetworkManager will then follow the symlink and write the contents of the resolv.conf there.  Unfortunately 
> this does not work when the destination file the symlink points to does not exist.  In this situation the 
> symlink points to a file in /tmp which is a tmpfs file system (RAM based) and wiped clean on each boot to 
> help support  a read-only root file system or doing minimal writes to the root file system.
>
> Is there a specific reason NetworkManager doesn't create the file the /etc/resolv.conf symlink points to if 
> it doesn't exist?  If there isn't a reason, could NetworkManager be updated to create the file pointed to 
> by the /etc/resolv.conf symlink?

Cannot you configure NM to manage /tmp/resolv.conf instead and leave
/etc/resolv.conf as permanent link to it?