Re: processing /etc/sysctl.d

[Greg Wooledge <greg@wooledge.org>]

On Wed, May 03, 2023 at 07:50:30PM -0400, Lee wrote:
> $ head /etc/sysctl.d/local.conf
> # my site local preferences
> #
> # man sysctl.d
> #   Configure kernel parameters at boot
> #   /etc/sysctl.d/*.conf
> #   key/name/under/proc/sys = some value
> 
> # accept router advertisements
> net/ipv6/conf/enp1s0/accept_ra = 1
> 
> 
> $ cat /proc/sys/net/ipv6/conf/enp1s0/accept_ra
> 0
> 
> 
> Telling the system to read /etc/sysctl.d/local.conf works:
> $ sudo sysctl --load=/etc/sysctl.d/local.conf
>   <.. snip lots ..>
> 
> $ cat /proc/sys/net/ipv6/conf/enp1s0/accept_ra
> 1
> 
> How do I get the system to read it at boot time?

A guess: perhaps this parameter cannot be set during the initial boot,
because the enp1s0 interface isn't in a working state yet.

If you put another parameter in the same local.conf file, one that's
*not* tied to a piece of hardware, does it work?