Hi,
where are you saving upgrade-persistent sysctl.conf modifications?
I am doing someting like:
ln -s /config/scripts/sysctl-user.conf /etc/sysctl.d/sysctl-user.conf
Any better idea?
Thanks
Hello @billytheczech ,
I just want to notice, this feature available under CLI option:
set system sysctl custom <some_sysctl_opt> value <value>
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This is one of those features that when I found, made me love Vyos just a little bit more 
Hi,
This is exactly the syntax I use in my Config. However, I have the peculiarity that I only want to adjust a sysctl parameter for a specific interface that does not yet exist at boot time, but is only created by the Config. In detail, it is about a GRE tunnel interface.
The sysctl key is set by:
set system sysctl custom net.ipv4.conf.tun1.accept_local value '1'
After a reboot of the router, the value is still 0. I have checked this with
sudo sysctl net.ipv4.conf.tun1.accept_local
The only workaround that works for me is to enter this in the file /config/scripts/vyos-postconfig-bootup.script
/sbin/sysctl -w net.ipv4.conf.tun1.accept_local="1"
Is there another way to solve the problem? The VyOS version is 1.3.
I don’t think there is, no.
This is potentially something you could submit as a feature request.
Though it’s a hard one, some variables are better set before interfaces etc are bought up.
I think your solution is probably the best for the moment.