/usr/include/dumbnet/tun.h is in libdumbnet-dev 1.12-7build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | /*
* tun.h
*
* Network tunnel device.
*
* Copyright (c) 2001 Dug Song <dugsong@monkey.org>
*
* $Id: tun.h 547 2005-01-25 21:30:40Z dugsong $
*/
#ifndef DNET_TUN_H
#define DNET_TUN_H
typedef struct tun tun_t;
__BEGIN_DECLS
tun_t *tun_open(struct addr *src, struct addr *dst, int mtu);
int tun_fileno(tun_t *tun);
const char *tun_name(tun_t *tun);
ssize_t tun_send(tun_t *tun, const void *buf, size_t size);
ssize_t tun_recv(tun_t *tun, void *buf, size_t size);
tun_t *tun_close(tun_t *tun);
__END_DECLS
#endif /* DNET_TUN_H */
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