uint32_t message_get_serial(sd_rtnl_message *m);
int message_seal(sd_rtnl *nl, sd_rtnl_message *m);
int socket_write_message(sd_rtnl *nl, sd_rtnl_message *m);
int socket_read_message(sd_rtnl *nl, sd_rtnl_message **ret);
uint32_t message_get_serial(sd_rtnl_message *m);
int message_seal(sd_rtnl *nl, sd_rtnl_message *m);
int socket_write_message(sd_rtnl *nl, sd_rtnl_message *m);
int socket_read_message(sd_rtnl *nl, sd_rtnl_message **ret);