sd_rtnl_message_enter_container  355 src/network/networkd-netdev.c         r = sd_rtnl_message_enter_container(message, IFLA_LINKINFO);
sd_rtnl_message_enter_container  124 src/systemd/sd-rtnl.h int sd_rtnl_message_enter_container(sd_rtnl_message *m, unsigned short type);