/usr/include/netlink/addr.h is in libnl2-dev 2.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* netlink/addr.h Abstract Address
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation version 2.1
* of the License.
*
* Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
*/
#ifndef NETLINK_ADDR_H_
#define NETLINK_ADDR_H_
#include <netlink/netlink.h>
#ifdef __cplusplus
extern "C" {
#endif
struct nl_addr;
/* Creation */
extern struct nl_addr * nl_addr_alloc(size_t);
extern struct nl_addr * nl_addr_alloc_attr(struct nlattr *, int);
extern struct nl_addr * nl_addr_build(int, void *, size_t);
extern int nl_addr_parse(const char *, int, struct nl_addr **);
extern struct nl_addr * nl_addr_clone(struct nl_addr *);
/* Destroyage */
extern void nl_addr_destroy(struct nl_addr *);
/* Usage Management */
extern struct nl_addr * nl_addr_get(struct nl_addr *);
extern void nl_addr_put(struct nl_addr *);
extern int nl_addr_shared(struct nl_addr *);
extern int nl_addr_cmp(struct nl_addr *, struct nl_addr *);
extern int nl_addr_cmp_prefix(struct nl_addr *, struct nl_addr *);
extern int nl_addr_iszero(struct nl_addr *);
extern int nl_addr_valid(char *, int);
extern int nl_addr_guess_family(struct nl_addr *);
extern int nl_addr_fill_sockaddr(struct nl_addr *,
struct sockaddr *, socklen_t *);
extern int nl_addr_info(struct nl_addr *, struct addrinfo **);
extern int nl_addr_resolve(struct nl_addr *addr, char *host, size_t hostlen);
/* Access Functions */
extern void nl_addr_set_family(struct nl_addr *, int);
extern int nl_addr_get_family(struct nl_addr *);
extern int nl_addr_set_binary_addr(struct nl_addr *, void *,
size_t);
extern void * nl_addr_get_binary_addr(struct nl_addr *);
extern unsigned int nl_addr_get_len(struct nl_addr *);
extern void nl_addr_set_prefixlen(struct nl_addr *, int);
extern unsigned int nl_addr_get_prefixlen(struct nl_addr *);
/* Address Family Translations */
extern char * nl_af2str(int, char *, size_t);
extern int nl_str2af(const char *);
/* Translations to Strings */
extern char * nl_addr2str(struct nl_addr *, char *, size_t);
#ifdef __cplusplus
}
#endif
#endif
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