int sd_rtnl_inc_rcvbuf(const sd_rtnl *const rtnl, const int size);
sd_rtnl *sd_rtnl_ref(sd_rtnl *nl);
int sd_rtnl_inc_rcvbuf(const sd_rtnl *const rtnl, const int size);
sd_rtnl *sd_rtnl_ref(sd_rtnl *nl);
int sd_rtnl_message_route_get_dst_prefixlen(sd_rtnl_message *m, unsigned char *dst_len);
int sd_rtnl_message_route_get_src_prefixlen(sd_rtnl_message *m, unsigned char *src_len);
int sd_rtnl_message_route_get_dst_prefixlen(sd_rtnl_message *m, unsigned char *dst_len);
int sd_rtnl_message_route_get_src_prefixlen(sd_rtnl_message *m, unsigned char *src_len);
int sd_rtnl_message_neigh_get_family(sd_rtnl_message *m, int *family);
int sd_rtnl_message_neigh_get_ifindex(sd_rtnl_message *m, int *family);
int sd_rtnl_message_neigh_get_family(sd_rtnl_message *m, int *family);
int sd_rtnl_message_neigh_get_ifindex(sd_rtnl_message *m, int *family);
int sd_rtnl_message_append_string(sd_rtnl_message *m, unsigned short type, const char *data);
int sd_rtnl_message_append_u8(sd_rtnl_message *m, unsigned short type, uint8_t data);
int sd_rtnl_message_append_string(sd_rtnl_message *m, unsigned short type, const char *data);
int sd_rtnl_message_append_u8(sd_rtnl_message *m, unsigned short type, uint8_t data);