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DHCPCD is standard on raspbian, but for this use it is not clear that it has advantages over good old networking service. So it is disabled (source here).

systemctl stop dhcpcd
systemctl disable dhcpcd
apt remove dhcpcd5

Basic network/interface is set :

auto lo
iface lo inet loopback


auto eth0
iface eth0 inet static
        address 192.168.163.252
        netmask 255.255.255.0
        gateway 192.168.163.254
        network 192.168.163.0
        broadcast 192.168.163.255
        dns-nameservers 192.168.163.30 8.8.8.8
        dns-search couderc.eu

After :

ifup eth0

the old and the new IP addresses should ping…