sd_icmp6_router_solicitation_start  968 src/network/networkd-link.c                 r = sd_icmp6_router_solicitation_start(link->icmp6_router_discovery);
sd_icmp6_router_solicitation_start   55 src/systemd/sd-icmp6-nd.h int sd_icmp6_router_solicitation_start(sd_icmp6_nd *nd);