ICMP6_EVENT_ROUTER_ADVERTISMENT_NONE  188 src/libsystemd-network/sd-icmp6-nd.c         int event = ICMP6_EVENT_ROUTER_ADVERTISMENT_NONE;
ICMP6_EVENT_ROUTER_ADVERTISMENT_NONE  871 src/network/networkd-link.c         case ICMP6_EVENT_ROUTER_ADVERTISMENT_NONE: