sd_dhcp_server_attach_event 1220 src/network/networkd-link.c                 r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0);
sd_dhcp_server_attach_event   38 src/systemd/sd-dhcp-server.h int sd_dhcp_server_attach_event(sd_dhcp_server *client, sd_event *event, int priority);