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#define IP_TOS             1
#define IP_TTL             2
#define IP_HDRINCL         3
#define IP_OPTIONS         4
#define IP_ROUTER_ALERT    5
#define IP_RECVOPTS        6
#define IP_RETOPTS         7
#define IP_PKTINFO         8
#define IP_PKTOPTIONS      9
#define IP_PMTUDISC        10
#define IP_MTU_DISCOVER    10
#define IP_RECVERR         11
#define IP_RECVTTL         12
#define IP_RECVTOS         13
#define IP_MTU             14
#define IP_FREEBIND        15
#define IP_IPSEC_POLICY    16
#define IP_XFRM_POLICY     17
#define IP_PASSSEC         18
#define IP_TRANSPARENT     19
#define IP_ORIGDSTADDR     20
#define IP_RECVORIGDSTADDR IP_ORIGDSTADDR
#define IP_MINTTL          21
#define IP_MULTICAST_IF    32
#define IP_MULTICAST_TTL   33
#define IP_MULTICAST_LOOP  34
#define IP_ADD_MEMBERSHIP  35
#define IP_DROP_MEMBERSHIP 36
#define IP_UNBLOCK_SOURCE  37
#define IP_BLOCK_SOURCE    38
#define IP_ADD_SOURCE_MEMBERSHIP  39
#define IP_DROP_SOURCE_MEMBERSHIP 40
#define IP_MSFILTER        41

#define IP_RECVRETOPTS IP_RETOPTS

#define IP_PMTUDISC_DONT   0
#define IP_PMTUDISC_WANT   1
#define IP_PMTUDISC_DO     2
#define IP_PMTUDISC_PROBE  3

#define SOL_IP 0

#define IP_DEFAULT_MULTICAST_TTL        1
#define IP_DEFAULT_MULTICAST_LOOP       1
#define IP_MAX_MEMBERSHIPS              20

struct ip_opts
{
	struct in_addr ip_dst;
	char ip_opts[40];
};

struct ip_mreq
{
	struct in_addr imr_multiaddr;
	struct in_addr imr_interface;
};

struct ip_mreqn
{
	struct in_addr imr_multiaddr;
	struct in_addr imr_address;
	int imr_ifindex;
};

struct in_pktinfo
{
	int ipi_ifindex;
	struct in_addr ipi_spec_dst;
	struct in_addr ipi_addr;
};

struct in6_pktinfo
{
	struct in6_addr ipi6_addr;
	unsigned ipi6_ifindex;
};

struct in6_mutinfo
{
	struct sockaddr_in6 ip6m_addr;
	uint32_t ip6m_mtu;
};

#define IPV6_ADDRFORM           1
#define IPV6_2292PKTINFO        2
#define IPV6_2292HOPOPTS        3
#define IPV6_2292DSTOPTS        4
#define IPV6_2292RTHDR          5
#define IPV6_2292PKTOPTIONS     6
#define IPV6_CHECKSUM           7
#define IPV6_2292HOPLIMIT       8
#define SCM_SRCRT               IPV6_RXSRCRT
#define IPV6_NEXTHOP            9
#define IPV6_AUTHHDR            10
#define IPV6_UNICAST_HOPS       16
#define IPV6_MULTICAST_IF       17
#define IPV6_MULTICAST_HOPS     18
#define IPV6_MULTICAST_LOOP     19
#define IPV6_JOIN_GROUP         20
#define IPV6_LEAVE_GROUP        21
#define IPV6_ROUTER_ALERT       22
#define IPV6_MTU_DISCOVER       23
#define IPV6_MTU                24
#define IPV6_RECVERR            25
#define IPV6_V6ONLY             26
#define IPV6_JOIN_ANYCAST       27
#define IPV6_LEAVE_ANYCAST      28
#define IPV6_IPSEC_POLICY       34
#define IPV6_XFRM_POLICY        35

#define IPV6_RECVPKTINFO        49
#define IPV6_PKTINFO            50
#define IPV6_RECVHOPLIMIT       51
#define IPV6_HOPLIMIT           52
#define IPV6_RECVHOPOPTS        53
#define IPV6_HOPOPTS            54
#define IPV6_RTHDRDSTOPTS       55
#define IPV6_RECVRTHDR          56
#define IPV6_RTHDR              57
#define IPV6_RECVDSTOPTS        58
#define IPV6_DSTOPTS            59

#define IPV6_RECVTCLASS         66
#define IPV6_TCLASS             67

#define IPV6_ADD_MEMBERSHIP     IPV6_JOIN_GROUP
#define IPV6_DROP_MEMBERSHIP    IPV6_LEAVE_GROUP
#define IPV6_RXHOPOPTS          IPV6_HOPOPTS
#define IPV6_RXDSTOPTS          IPV6_DSTOPTS


#define IPV6_PMTUDISC_DONT      0
#define IPV6_PMTUDISC_WANT      1
#define IPV6_PMTUDISC_DO        2
#define IPV6_PMTUDISC_PROBE     3

#define SOL_IPV6        41
#define SOL_ICMPV6      58

#define IPV6_RTHDR_LOOSE        0
#define IPV6_RTHDR_STRICT       1

#define IPV6_RTHDR_TYPE_0       0