const char *rtnl_rttable_n2a(__u32 id, char *buf, int len);
const char *rtnl_rtrealm_n2a(int id, char *buf, int len);
const char *rtnl_dsfield_n2a(int id, char *buf, int len);
+const char *rtnl_dsfield_get_name(int id);
const char *rtnl_group_n2a(int id, char *buf, int len);
int rtnl_rtprot_a2n(__u32 *id, const char *arg);