dhcpcd-discuss

Hi Alex

On 04/04/2018 00:05, Alex K. wrote:
> I've been looking for days to achieve the following - replace the 
> default gateway DHCPCD got from the network, with a static route (toward 
> a particular subnet only), using the router IP address we got within the 
> basic DHCP offer, as that route next hop.
>
> Basically, replacing the "regular" default route DHCP put, with a static 
> route. Obviously keeping the rest of information DHCP got (our IP 
> address and such).
>
> After digging for days, I haven't been able to make working 
> configuration/hook. Therefore, any suggestion will be gladly appreciated.

dhcpcd does not offer such functionality. Assumning you're using Linux, 
I would script a dhcpcd.exit-hook like so.
(This is untested and just typed here, hopefully enough for an idea)

if $if_up; then
	ip r d default dev $interface
	set -- $routers
	while [ -n "$1" ]; do
		ip r a 1.2.3.4/16 via $1 dev $interface && break
		shift
	done
elif $if_down; then
	ip r d 1.2.3.4/16 dev $interface
fi

Good luck

Roy