dhcpcd-discuss

Hi

On 17/07/2020 14:29, Davesh Patel wrote:
> Is it possible to configure dhcpcd to do local link addressing in parallel to DHCP?
>
>   At the moment, dhcpcd sends DHCP discover and waits for that to timeout before 
> using the local link IP.
>
> But what I'm trying to achieve is for dhcpcd to start to configure local link 
> address by sending ARP probe, etc (i.e. not wait for DISCOVER timeout) and, at 
> the same time, send a DHCP discover to try to obtain an IP from a DHCP server. 
> If a DHCP discover was not available, then it will stick with the IPv4LL; 
> otherwise, the DHCP IP would 'overwrite' the IPv4LL IP.

Newer dhcpcd versions do this.
https://roy.marples.name/cgit/dhcpcd.git/tree/src/dhcp.c#n1872

Basically either the fallback profile or ipv4ll starts after the reboot timeout 
from initial discover being sent. The default reboot timeout is 5 seconds.

Roy