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Re: Network config




On Fri, Aug 04, 2017 at 10:14:20AM +0200, tomas@xxxxxxxxxx wrote:
> On Thu, Aug 03, 2017 at 08:49:05PM +0200, Pascal Hambourg wrote:
> > Le 03/08/2017 à 15:52, Zenaan Harkness a écrit :
> > >On Thu, Aug 03, 2017 at 08:53:27AM -0400, Greg Wooledge wrote:
> > >>But the problem is, various Unix DHCP client daemons do *too much*.
> > >>All I want them to do is set the IP address, netmask, and gateway.
> > >>I *don't* want them to change the system hostname, or the system
> > >>resolv.conf (in which I have hand-placed *our* DNS search domain and
> > >>*our* DNS resolvers).
> > >
> > >Well, making /etc/resolv.conf read-only, owned by root.root
> > 
> > ... is just useless. resolv.conf is already owned by root, DCHP
> > client daemons run as root and on Linux systems root (uid 0) ignores
> > read/write permissions.
> 
> That's what chattr +i is for. Don't forget to do chattr -i on the file
> whenever *you* want to change it :-)

Another command that could be add to /e/n/i :)