dhcpcd-discuss

> Why not setup a VM and install your own NTP
> server? Then just set it's IP
> address in the DHCP message from your
> DHCP server which may or may not be on the
> same machine.

Yes this is good idea.
Thank u.

Il ven 24 lug 2020, 16:38 Roy Marples <roy@xxxxxxxxxxxx> ha scritto:

> On 24/07/2020 13:46, Stefano Cappa wrote:
> > How many times dhcpcd calls my custom hook? I suppose multiple times, or
> am I wrong?
> > If dhcpcd calls the hook multiple times and $if_up is always true, I'll
> restart
> > my ntp service many times.
> > To prevent this, is it right to compare "old_" and "new_" ntp_servers
> variables
> > to understand if something is changed to decide if I should reboot
> systemd or not?
> > Obviously, as you suggested, I should also check if the variable is
> empty.
>
> This is what the dhcpcd ntp hook script does.
>
> > All this discussion is about my worries about runtime/live changes of
> the router
> > configuration. Because, if I change NTP on the router, I expect that my
> device
> > with dhcpcd will always receive and update the new NTP via DHCP packet.
> But
> > obviously, I don't want to restart NTP daemon if there are no real
> reasons to do it.
>
> Yes
>
> > "The answer simply is, you just don't know." I absolutely agree with
> this and I
> > have to trust in dhcpcd.
> > But my question was more about to find a commercial router that I can
> buy
> > without spending too much money to try my configuration.
>
> Why not setup a VM and install your own NTP server? Then just set it's IP
> address in the DHCP message from your DHCP server which may or may not be
> on the
> same machine.
>
> > Because at the moment I don't have any physical router that can set NTP
> via
> > DHCP. I found only routers able to set the local time, but not an ip
> address.
> > Also searching on the web I found only some professional Cisco routers,
> but not
> > something cheaper to buy. I'm really surprised that this feature is so
> uncommon
> > on domestic routers.
> > If you have this information, can you suggest, also privately, the model
> of
> > router available on the market that can let me try this feature on a
> real
> > network? At least, to check if what I've done is really working, because
> now I'm
> > simulating everything and I don't really trust what I've done.
>
> I'm not going to do your market research for you :)
>
> I generally roll my own router - I currently use an EdgeRouter LITE
> re-flashed
> with NetBSD which runs dnsmsaq and NTPd.
>
> Roy
>