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/* Copyright (C) 1991-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C 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; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _NETINET_IN_H
#define _NETINET_IN_H 1
#include <features.h>
#include <stdint.h>
#include <sys/socket.h>
#include <bits/types.h>
__BEGIN_DECLS
/* Standard well-defined IP protocols. */
enum
{
IPPROTO_IP = 0, /* Dummy protocol for TCP. */
#define IPPROTO_IP IPPROTO_IP
IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */
#define IPPROTO_HOPOPTS IPPROTO_HOPOPTS
IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */
#define IPPROTO_ICMP IPPROTO_ICMP
IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */
#define IPPROTO_IGMP IPPROTO_IGMP
IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */
#define IPPROTO_IPIP IPPROTO_IPIP
IPPROTO_TCP = 6, /* Transmission Control Protocol. */
#define IPPROTO_TCP IPPROTO_TCP
IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */
#define IPPROTO_EGP IPPROTO_EGP
IPPROTO_PUP = 12, /* PUP protocol. */
#define IPPROTO_PUP IPPROTO_PUP
IPPROTO_UDP = 17, /* User Datagram Protocol. */
#define IPPROTO_UDP IPPROTO_UDP
IPPROTO_IDP = 22, /* XNS IDP protocol. */
#define IPPROTO_IDP IPPROTO_IDP
IPPROTO_TP = 29, /* SO Transport Protocol Class 4. */
#define IPPROTO_TP IPPROTO_TP
IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol. */
#define IPPROTO_DCCP IPPROTO_DCCP
IPPROTO_IPV6 = 41, /* IPv6 header. */
#define IPPROTO_IPV6 IPPROTO_IPV6
IPPROTO_ROUTING = 43, /* IPv6 routing header. */
#define IPPROTO_ROUTING IPPROTO_ROUTING
IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */
#define IPPROTO_FRAGMENT IPPROTO_FRAGMENT
IPPROTO_RSVP = 46, /* Reservation Protocol. */
#define IPPROTO_RSVP IPPROTO_RSVP
IPPROTO_GRE = 47, /* General Routing Encapsulation. */
#define IPPROTO_GRE IPPROTO_GRE
IPPROTO_ESP = 50, /* encapsulating security payload. */
#define IPPROTO_ESP IPPROTO_ESP
IPPROTO_AH = 51, /* authentication header. */
#define IPPROTO_AH IPPROTO_AH
IPPROTO_ICMPV6 = 58, /* ICMPv6. */
#define IPPROTO_ICMPV6 IPPROTO_ICMPV6
IPPROTO_NONE = 59, /* IPv6 no next header. */
#define IPPROTO_NONE IPPROTO_NONE
IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */
#define IPPROTO_DSTOPTS IPPROTO_DSTOPTS
IPPROTO_MTP = 92, /* Multicast Transport Protocol. */
#define IPPROTO_MTP IPPROTO_MTP
IPPROTO_ENCAP = 98, /* Encapsulation Header. */
#define IPPROTO_ENCAP IPPROTO_ENCAP
IPPROTO_PIM = 103, /* Protocol Independent Multicast. */
#define IPPROTO_PIM IPPROTO_PIM
IPPROTO_COMP = 108, /* Compression Header Protocol. */
#define IPPROTO_COMP IPPROTO_COMP
IPPROTO_SCTP = 132, /* Stream Control Transmission Protocol. */
#define IPPROTO_SCTP IPPROTO_SCTP
IPPROTO_UDPLITE = 136, /* UDP-Lite protocol. */
#define IPPROTO_UDPLITE IPPROTO_UDPLITE
IPPROTO_RAW = 255, /* Raw IP packets. */
#define IPPROTO_RAW IPPROTO_RAW
IPPROTO_MAX
};
/* Type to represent a port. */
typedef uint16_t in_port_t;
/* Standard well-known ports. */
enum
{
IPPORT_ECHO = 7, /* Echo service. */
IPPORT_DISCARD = 9, /* Discard transmissions service. */
IPPORT_SYSTAT = 11, /* System status service. */
IPPORT_DAYTIME = 13, /* Time of day service. */
IPPORT_NETSTAT = 15, /* Network status service. */
IPPORT_FTP = 21, /* File Transfer Protocol. */
IPPORT_TELNET = 23, /* Telnet protocol. */
IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */
IPPORT_TIMESERVER = 37, /* Timeserver service. */
IPPORT_NAMESERVER = 42, /* Domain Name Service. */
IPPORT_WHOIS = 43, /* Internet Whois service. */
IPPORT_MTP = 57,
IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
IPPORT_RJE = 77,
IPPORT_FINGER = 79, /* Finger service. */
IPPORT_TTYLINK = 87,
IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
IPPORT_EXECSERVER = 512, /* execd service. */
IPPORT_LOGINSERVER = 513, /* rlogind service. */
IPPORT_CMDSERVER = 514,
IPPORT_EFSSERVER = 520,
/* UDP ports. */
IPPORT_BIFFUDP = 512,
IPPORT_WHOSERVER = 513,
IPPORT_ROUTESERVER = 520,
/* Ports less than this value are reserved for privileged processes. */
IPPORT_RESERVED = 1024,
/* Ports greater this value are reserved for (non-privileged) servers. */
IPPORT_USERRESERVED = 5000
};
/* Internet address. */
typedef uint32_t in_addr_t;
struct in_addr
{
in_addr_t s_addr;
};
/* Definitions of the bits in an Internet address integer.
On subnets, host and network parts are found according to
the subnet mask, not these masks. */
#define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0)
#define IN_CLASSA_NET 0xff000000
#define IN_CLASSA_NSHIFT 24
#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
#define IN_CLASSA_MAX 128
#define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000)
#define IN_CLASSB_NET 0xffff0000
#define IN_CLASSB_NSHIFT 16
#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
#define IN_CLASSB_MAX 65536
#define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000)
#define IN_CLASSC_NET 0xffffff00
#define IN_CLASSC_NSHIFT 8
#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
#define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
#define IN_MULTICAST(a) IN_CLASSD(a)
#define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
#define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
/* Address to accept any incoming messages. */
#define INADDR_ANY ((in_addr_t) 0x00000000)
/* Address to send to all hosts. */
#define INADDR_BROADCAST ((in_addr_t) 0xffffffff)
/* Address indicating an error return. */
#define INADDR_NONE ((in_addr_t) 0xffffffff)
/* Network number for local host loopback. */
#define IN_LOOPBACKNET 127
/* Address to loopback in software to local host. */
#ifndef INADDR_LOOPBACK
# define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */
#endif
/* Defines for Multicast INADDR. */
#define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */
#define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */
#define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */
#define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */
/* IPv6 address */
struct in6_addr
{
union
{
uint8_t __u6_addr8[16];
#if defined __USE_MISC || defined __USE_GNU
uint16_t __u6_addr16[8];
uint32_t __u6_addr32[4];
#endif
} __in6_u;
#define s6_addr __in6_u.__u6_addr8
#if defined __USE_MISC || defined __USE_GNU
# define s6_addr16 __in6_u.__u6_addr16
# define s6_addr32 __in6_u.__u6_addr32
#endif
};
extern const struct in6_addr in6addr_any; /* :: */
extern const struct in6_addr in6addr_loopback; /* ::1 */
#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
#define INET_ADDRSTRLEN 16
#define INET6_ADDRSTRLEN 46
/* Structure describing an Internet socket address. */
struct sockaddr_in
{
__SOCKADDR_COMMON (sin_);
in_port_t sin_port; /* Port number. */
struct in_addr sin_addr; /* Internet address. */
/* Pad to size of `struct sockaddr'. */
unsigned char sin_zero[sizeof (struct sockaddr) -
__SOCKADDR_COMMON_SIZE -
sizeof (in_port_t) -
sizeof (struct in_addr)];
};
/* Ditto, for IPv6. */
struct sockaddr_in6
{
__SOCKADDR_COMMON (sin6_);
in_port_t sin6_port; /* Transport layer port # */
uint32_t sin6_flowinfo; /* IPv6 flow information */
struct in6_addr sin6_addr; /* IPv6 address */
uint32_t sin6_scope_id; /* IPv6 scope-id */
};
#if defined __USE_MISC || defined __USE_GNU
/* IPv4 multicast request. */
struct ip_mreq
{
/* IP multicast address of group. */
struct in_addr imr_multiaddr;
/* Local IP address of interface. */
struct in_addr imr_interface;
};
struct ip_mreq_source
{
/* IP multicast address of group. */
struct in_addr imr_multiaddr;
/* IP address of source. */
struct in_addr imr_interface;
/* IP address of interface. */
struct in_addr imr_sourceaddr;
};
#endif
/* Likewise, for IPv6. */
struct ipv6_mreq
{
/* IPv6 multicast address of group */
struct in6_addr ipv6mr_multiaddr;
/* local interface */
unsigned int ipv6mr_interface;
};
#if defined __USE_MISC || defined __USE_GNU
/* Multicast group request. */
struct group_req
{
/* Interface index. */
uint32_t gr_interface;
/* Group address. */
struct sockaddr_storage gr_group;
};
struct group_source_req
{
/* Interface index. */
uint32_t gsr_interface;
/* Group address. */
struct sockaddr_storage gsr_group;
/* Source address. */
struct sockaddr_storage gsr_source;
};
/* Full-state filter operations. */
struct ip_msfilter
{
/* IP multicast address of group. */
struct in_addr imsf_multiaddr;
/* Local IP address of interface. */
struct in_addr imsf_interface;
/* Filter mode. */
uint32_t imsf_fmode;
/* Number of source addresses. */
uint32_t imsf_numsrc;
/* Source addresses. */
struct in_addr imsf_slist[1] __attribute__((bnd_variable_size));
};
#define IP_MSFILTER_SIZE(numsrc) (sizeof (struct ip_msfilter) \
- sizeof (struct in_addr) \
+ (numsrc) * sizeof (struct in_addr))
struct group_filter
{
/* Interface index. */
uint32_t gf_interface;
/* Group address. */
struct sockaddr_storage gf_group;
/* Filter mode. */
uint32_t gf_fmode;
/* Number of source addresses. */
uint32_t gf_numsrc;
/* Source addresses. */
struct sockaddr_storage gf_slist[1] __attribute__((bnd_variable_size));
};
#define GROUP_FILTER_SIZE(numsrc) (sizeof (struct group_filter) \
- sizeof (struct sockaddr_storage) \
+ ((numsrc) \
* sizeof (struct sockaddr_storage)))
#endif
/* Get system-specific definitions. */
#include <bits/in.h>
/* Functions to convert between host and network byte order.
Please note that these functions normally take `unsigned long int' or
`unsigned short int' values as arguments and also return them. But
this was a short-sighted decision since on different systems the types
may have different representations but the values are always the same. */
extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__));
extern uint16_t ntohs (uint16_t __netshort)
__THROW __attribute__ ((__const__));
extern uint32_t htonl (uint32_t __hostlong)
__THROW __attribute__ ((__const__));
extern uint16_t htons (uint16_t __hostshort)
__THROW __attribute__ ((__const__));
#include <endian.h>
/* Get machine dependent optimized versions of byte swapping functions. */
#include <bits/byteswap.h>
#ifdef __OPTIMIZE__
/* We can optimize calls to the conversion functions. Either nothing has
to be done or we are using directly the byte-swapping functions which
often can be inlined. */
# if __BYTE_ORDER == __BIG_ENDIAN
/* The host byte order is the same as network byte order,
so these functions are all just identity. */
# define ntohl(x) (x)
# define ntohs(x) (x)
# define htonl(x) (x)
# define htons(x) (x)
# else
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define ntohl(x) __bswap_32 (x)
# define ntohs(x) __bswap_16 (x)
# define htonl(x) __bswap_32 (x)
# define htons(x) __bswap_16 (x)
# endif
# endif
#endif
#ifdef __GNUC__
# define IN6_IS_ADDR_UNSPECIFIED(a) \
(__extension__ \
({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
__a->s6_addr32[0] == 0 \
&& __a->s6_addr32[1] == 0 \
&& __a->s6_addr32[2] == 0 \
&& __a->s6_addr32[3] == 0; }))
# define IN6_IS_ADDR_LOOPBACK(a) \
(__extension__ \
({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
__a->s6_addr32[0] == 0 \
&& __a->s6_addr32[1] == 0 \
&& __a->s6_addr32[2] == 0 \
&& __a->s6_addr32[3] == htonl (1); }))
# define IN6_IS_ADDR_LINKLOCAL(a) \
(__extension__ \
({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
(__a->s6_addr32[0] & htonl (0xffc00000)) == htonl (0xfe800000); }))
# define IN6_IS_ADDR_SITELOCAL(a) \
(__extension__ \
({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
(__a->s6_addr32[0] & htonl (0xffc00000)) == htonl (0xfec00000); }))
# define IN6_IS_ADDR_V4MAPPED(a) \
(__extension__ \
({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
__a->s6_addr32[0] == 0 \
&& __a->s6_addr32[1] == 0 \
&& __a->s6_addr32[2] == htonl (0xffff); }))
# define IN6_IS_ADDR_V4COMPAT(a) \
(__extension__ \
({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
__a->s6_addr32[0] == 0 \
&& __a->s6_addr32[1] == 0 \
&& __a->s6_addr32[2] == 0 \
&& ntohl (__a->s6_addr32[3]) > 1; }))
# define IN6_ARE_ADDR_EQUAL(a,b) \
(__extension__ \
({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
const struct in6_addr *__b = (const struct in6_addr *) (b); \
__a->s6_addr32[0] == __b->s6_addr32[0] \
&& __a->s6_addr32[1] == __b->s6_addr32[1] \
&& __a->s6_addr32[2] == __b->s6_addr32[2] \
&& __a->s6_addr32[3] == __b->s6_addr32[3]; }))
#else
# define IN6_IS_ADDR_UNSPECIFIED(a) \
(((const uint32_t *) (a))[0] == 0 \
&& ((const uint32_t *) (a))[1] == 0 \
&& ((const uint32_t *) (a))[2] == 0 \
&& ((const uint32_t *) (a))[3] == 0)
# define IN6_IS_ADDR_LOOPBACK(a) \
(((const uint32_t *) (a))[0] == 0 \
&& ((const uint32_t *) (a))[1] == 0 \
&& ((const uint32_t *) (a))[2] == 0 \
&& ((const uint32_t *) (a))[3] == htonl (1))
# define IN6_IS_ADDR_LINKLOCAL(a) \
((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \
== htonl (0xfe800000))
# define IN6_IS_ADDR_SITELOCAL(a) \
((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \
== htonl (0xfec00000))
# define IN6_IS_ADDR_V4MAPPED(a) \
((((const uint32_t *) (a))[0] == 0) \
&& (((const uint32_t *) (a))[1] == 0) \
&& (((const uint32_t *) (a))[2] == htonl (0xffff)))
# define IN6_IS_ADDR_V4COMPAT(a) \
((((const uint32_t *) (a))[0] == 0) \
&& (((const uint32_t *) (a))[1] == 0) \
&& (((const uint32_t *) (a))[2] == 0) \
&& (ntohl (((const uint32_t *) (a))[3]) > 1))
# define IN6_ARE_ADDR_EQUAL(a,b) \
((((const uint32_t *) (a))[0] == ((const uint32_t *) (b))[0]) \
&& (((const uint32_t *) (a))[1] == ((const uint32_t *) (b))[1]) \
&& (((const uint32_t *) (a))[2] == ((const uint32_t *) (b))[2]) \
&& (((const uint32_t *) (a))[3] == ((const uint32_t *) (b))[3]))
#endif
#define IN6_IS_ADDR_MULTICAST(a) (((const uint8_t *) (a))[0] == 0xff)
#if defined __USE_MISC || defined __USE_GNU
/* Bind socket to a privileged IP port. */
extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW;
/* The IPv6 version of this function. */
extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in)
__THROW;
#endif
#define IN6_IS_ADDR_MC_NODELOCAL(a) \
(IN6_IS_ADDR_MULTICAST(a) \
&& ((((const uint8_t *) (a))[1] & 0xf) == 0x1))
#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
(IN6_IS_ADDR_MULTICAST(a) \
&& ((((const uint8_t *) (a))[1] & 0xf) == 0x2))
#define IN6_IS_ADDR_MC_SITELOCAL(a) \
(IN6_IS_ADDR_MULTICAST(a) \
&& ((((const uint8_t *) (a))[1] & 0xf) == 0x5))
#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
(IN6_IS_ADDR_MULTICAST(a) \
&& ((((const uint8_t *) (a))[1] & 0xf) == 0x8))
#define IN6_IS_ADDR_MC_GLOBAL(a) \
(IN6_IS_ADDR_MULTICAST(a) \
&& ((((const uint8_t *) (a))[1] & 0xf) == 0xe))
#ifdef __USE_GNU
struct cmsghdr; /* Forward declaration. */
/* IPv6 packet information. */
struct in6_pktinfo
{
struct in6_addr ipi6_addr; /* src/dst IPv6 address */
unsigned int ipi6_ifindex; /* send/recv interface index */
};
/* IPv6 MTU information. */
struct ip6_mtuinfo
{
struct sockaddr_in6 ip6m_addr; /* dst address including zone ID */
uint32_t ip6m_mtu; /* path MTU in host byte order */
};
/* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */
extern int inet6_option_space (int __nbytes)
__THROW __attribute_deprecated__;
extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp,
int __type) __THROW __attribute_deprecated__;
extern int inet6_option_append (struct cmsghdr *__cmsg,
const uint8_t *__typep, int __multx,
int __plusy) __THROW __attribute_deprecated__;
extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen,
int __multx, int __plusy)
__THROW __attribute_deprecated__;
extern int inet6_option_next (const struct cmsghdr *__cmsg,
uint8_t **__tptrp)
__THROW __attribute_deprecated__;
extern int inet6_option_find (const struct cmsghdr *__cmsg,
uint8_t **__tptrp, int __type)
__THROW __attribute_deprecated__;
/* Hop-by-Hop and Destination Options Processing (RFC 3542). */
extern int inet6_opt_init (void *__extbuf, socklen_t __extlen) __THROW;
extern int inet6_opt_append (void *__extbuf, socklen_t __extlen, int __offset,
uint8_t __type, socklen_t __len, uint8_t __align,
void **__databufp) __THROW;
extern int inet6_opt_finish (void *__extbuf, socklen_t __extlen, int __offset)
__THROW;
extern int inet6_opt_set_val (void *__databuf, int __offset, void *__val,
socklen_t __vallen) __THROW;
extern int inet6_opt_next (void *__extbuf, socklen_t __extlen, int __offset,
uint8_t *__typep, socklen_t *__lenp,
void **__databufp) __THROW;
extern int inet6_opt_find (void *__extbuf, socklen_t __extlen, int __offset,
uint8_t __type, socklen_t *__lenp,
void **__databufp) __THROW;
extern int inet6_opt_get_val (void *__databuf, int __offset, void *__val,
socklen_t __vallen) __THROW;
/* Routing Header Option (RFC 3542). */
extern socklen_t inet6_rth_space (int __type, int __segments) __THROW;
extern void *inet6_rth_init (void *__bp, socklen_t __bp_len, int __type,
int __segments) __THROW;
extern int inet6_rth_add (void *__bp, const struct in6_addr *__addr) __THROW;
extern int inet6_rth_reverse (const void *__in, void *__out) __THROW;
extern int inet6_rth_segments (const void *__bp) __THROW;
extern struct in6_addr *inet6_rth_getaddr (const void *__bp, int __index)
__THROW;
/* Multicast source filter support. */
/* Get IPv4 source filter. */
extern int getipv4sourcefilter (int __s, struct in_addr __interface_addr,
struct in_addr __group, uint32_t *__fmode,
uint32_t *__numsrc, struct in_addr *__slist)
__THROW;
/* Set IPv4 source filter. */
extern int setipv4sourcefilter (int __s, struct in_addr __interface_addr,
struct in_addr __group, uint32_t __fmode,
uint32_t __numsrc,
const struct in_addr *__slist)
__THROW;
/* Get source filter. */
extern int getsourcefilter (int __s, uint32_t __interface_addr,
const struct sockaddr *__group,
socklen_t __grouplen, uint32_t *__fmode,
uint32_t *__numsrc,
struct sockaddr_storage *__slist) __THROW;
/* Set source filter. */
extern int setsourcefilter (int __s, uint32_t __interface_addr,
const struct sockaddr *__group,
socklen_t __grouplen, uint32_t __fmode,
uint32_t __numsrc,
const struct sockaddr_storage *__slist) __THROW;
#endif /* use GNU */
__END_DECLS
#endif /* netinet/in.h */
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