sd_icmp6_nd_set_mac 1235 src/network/networkd-link.c                 r = sd_icmp6_nd_set_mac(link->icmp6_router_discovery,
sd_icmp6_nd_set_mac   44 src/systemd/sd-icmp6-nd.h int sd_icmp6_nd_set_mac(sd_icmp6_nd *nd, const struct ether_addr *mac_addr);