Hello,
See my answer in this post : viewtopic.php?t=110557&p=762332
Maybe the solution is to stay in manual (not static) and editing the /etc/dhcpcd.conf to add the reservation at this end.
Regards,
Ben

Hello, i have 1 good news, 1 bad news and maybe a solution :) 1) you have a blank space in your command between domain name server and equal and again between equal and your ip address : dhcpcd -S ip_address=172.16.100.35/24 -S routers=172.16.100.254 -S domain_name_servers_space_=_space_172.16.100.1...