sd_rtnl_message_read_u8   96 src/network/networkd-link.c         r = sd_rtnl_message_read_u8(m, IFLA_OPERSTATE, &operstate);
sd_rtnl_message_read_u8  117 src/systemd/sd-rtnl.h int sd_rtnl_message_read_u8(sd_rtnl_message *m, unsigned short type, uint8_t *data);