dhcpcd-discuss

Hi Jesse

On 17/10/2020 19:17, Jesse Meade-Clift wrote:
> I am using dhcpcd 7.1.0 (Debian package).

Wow, that's ancient. Debian to upgrade to something .... more recent.

> I have a small network where 
> everything is powered on simultaneously and the client often boots before the 
> dhcp server. I am trying to figure out how to configure dhcpcd to wait more than 
> a couple seconds for a server before selecting a static fallback profile. Is 
> this possible?
>
> I have tried a simple 'timeout 180' near the top of dhcpcd.conf but this doesn't 
> seem to have any effect.
>
> I think the relevant debug logs are here:
> ...
> Oct 17 17:40:14 [418]: enp1s0: soliciting a DHCP lease
> Oct 17 17:40:14 [418]: enp1s0: sending DISCOVER (xid 0xe8f336a0), next in 3.7 
> seconds
> Oct 17 17:40:14 [418]: enp1s0: soliciting an IPv6 router
> Oct 17 17:40:14 [418]: enp1s0: delaying Router Solicitation for LL address
> Oct 17 17:40:15 [418]: enp1s0: sending Router Solicitation
> Oct 17 17:40:18 [418]: enp1s0: sending DISCOVER (xid 0xe8f336a0), next in 7.8 
> seconds
> Oct 17 17:40:19 [418]: enp1s0: selected profile static_enp1s0
> ...
>
> Seems like dhcpcd selects the static profile rather quickly after not getting a 
> response from a server.
>
> Hoping I'm missing something simple here.

This is controlled by the reboot timeout which has a default of 5 seconds.

>  everything is powered on simultaneously

If that's the case why bother with a static profile? dhcpcd will poll ad 
infinitum to get a DHCP lease by default.

Roy