[07:27] <lukasm> pwchi [DHCPv4] SendRelease=yes/no cannot be controlled by netplan currently.
[07:30] <lukasm> but you could try addint a drop-in override e.g. in /etc/systemd/network/10-netplan-eth0.networkd.d/your.conf
[07:31] <lukasm> err /etc/systemd/network/10-netplan-eth0.network.d/your.conf that is
[07:31] <lukasm> (depending on your interface/netplan ID)