Section: systemd-resolved.service (8)
systemd-resolved is a system service that manages network name resolution. It does so by generating /run/systemd/resolve/resolv.conf, which may be symlinked from /etc/resolv.conf. The contents is generated from the global settings in (5), the per-link static settings in .network files, and the per-link dynamic settings received over DHCP. See (5) for more details.