#include <sys/param.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/protosw.h>
#include <sys/kernel.h>
#include <sys/domain.h>
#include <sys/mbuf.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/radix.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip_encap.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/ip6.h>
#include <netinet6/ip6_var.h>
#include <netinet6/in6_var.h>
#include <netinet/icmp6.h>
#include <netinet/tcp.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet6/tcp6_var.h>
#include <netinet6/raw_ip6.h>
#include <netinet6/udp6_var.h>
#include <netinet6/nd6.h>
#include <netinet6/mld6_var.h>
#if IPSEC
#include <netinet6/ipsec.h>
#if INET6
#include <netinet6/ipsec6.h>
#endif
#include <netinet6/ah.h>
#if INET6
#include <netinet6/ah6.h>
#endif
#if IPSEC_ESP
#include <netinet6/esp.h>
#if INET6
#include <netinet6/esp6.h>
#endif
#endif
#include <netinet6/ipcomp.h>
#if INET6
#include <netinet6/ipcomp6.h>
#endif
#endif
#include <netinet6/ip6protosw.h>
#include <net/net_osdep.h>
extern struct domain inet6domain_s;
struct domain *inet6domain = NULL;
static struct pr_usrreqs nousrreqs;
lck_mtx_t *inet6_domain_mutex;
static void in6_dinit(struct domain *);
static int rip6_pr_output(struct mbuf *, struct socket *,
struct sockaddr_in6 *, struct mbuf *);
struct ip6protosw inet6sw[] = {
{
.pr_type = 0,
.pr_protocol = IPPROTO_IPV6,
.pr_init = ip6_init,
.pr_drain = ip6_drain,
.pr_usrreqs = &nousrreqs,
},
{
.pr_type = SOCK_DGRAM,
.pr_protocol = IPPROTO_UDP,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_PROTOLOCK|PR_PCBLOCK|
PR_EVCONNINFO,
.pr_input = udp6_input,
.pr_ctlinput = udp6_ctlinput,
.pr_ctloutput = ip6_ctloutput,
#if !INET
.pr_init = udp_init,
#endif
.pr_usrreqs = &udp6_usrreqs,
.pr_lock = udp_lock,
.pr_unlock = udp_unlock,
.pr_getlock = udp_getlock,
},
{
.pr_type = SOCK_STREAM,
.pr_protocol = IPPROTO_TCP,
.pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_PCBLOCK|
PR_PROTOLOCK|PR_DISPOSE|PR_EVCONNINFO,
.pr_input = tcp6_input,
.pr_ctlinput = tcp6_ctlinput,
.pr_ctloutput = tcp_ctloutput,
#if !INET
.pr_init = tcp_init,
#endif
.pr_drain = tcp_drain,
.pr_usrreqs = &tcp6_usrreqs,
.pr_lock = tcp_lock,
.pr_unlock = tcp_unlock,
.pr_getlock = tcp_getlock,
},
{
.pr_type = SOCK_RAW,
.pr_protocol = IPPROTO_RAW,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = rip6_input,
.pr_output = rip6_pr_output,
.pr_ctlinput = rip6_ctlinput,
.pr_ctloutput = rip6_ctloutput,
#if !INET
.pr_init = rip_init,
#endif
.pr_usrreqs = &rip6_usrreqs,
.pr_unlock = rip_unlock,
},
{
.pr_type = SOCK_RAW,
.pr_protocol = IPPROTO_ICMPV6,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
.pr_input = icmp6_input,
.pr_output = rip6_pr_output,
.pr_ctlinput = rip6_ctlinput,
.pr_ctloutput = rip6_ctloutput,
.pr_init = icmp6_init,
.pr_usrreqs = &rip6_usrreqs,
.pr_unlock = rip_unlock,
},
{
.pr_type = SOCK_DGRAM,
.pr_protocol = IPPROTO_ICMPV6,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
.pr_input = icmp6_input,
.pr_output = rip6_pr_output,
.pr_ctlinput = rip6_ctlinput,
.pr_ctloutput = icmp6_dgram_ctloutput,
.pr_init = icmp6_init,
.pr_usrreqs = &icmp6_dgram_usrreqs,
.pr_unlock = rip_unlock,
},
{
.pr_type = SOCK_RAW,
.pr_protocol = IPPROTO_DSTOPTS,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = dest6_input,
.pr_usrreqs = &nousrreqs,
},
{
.pr_type = SOCK_RAW,
.pr_protocol = IPPROTO_ROUTING,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = route6_input,
.pr_usrreqs = &nousrreqs,
},
{
.pr_type = SOCK_RAW,
.pr_protocol = IPPROTO_FRAGMENT,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
.pr_input = frag6_input,
.pr_usrreqs = &nousrreqs,
},
#if IPSEC
{
.pr_type = SOCK_RAW,
.pr_protocol = IPPROTO_AH,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
.pr_input = ah6_input,
.pr_usrreqs = &nousrreqs,
},
#if IPSEC_ESP
{
.pr_type = SOCK_RAW,
.pr_protocol = IPPROTO_ESP,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
.pr_input = esp6_input,
.pr_ctlinput = esp6_ctlinput,
.pr_usrreqs = &nousrreqs,
},
#endif
{
.pr_type = SOCK_RAW,
.pr_protocol = IPPROTO_IPCOMP,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
.pr_input = ipcomp6_input,
.pr_usrreqs = &nousrreqs,
},
#endif
#if INET
{
.pr_type = SOCK_RAW,
.pr_protocol = IPPROTO_IPV4,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
.pr_input = encap6_input,
.pr_output = rip6_pr_output,
.pr_ctloutput = rip6_ctloutput,
.pr_init = encap6_init,
.pr_usrreqs = &rip6_usrreqs,
.pr_unlock = rip_unlock,
},
#endif
{
.pr_type = SOCK_RAW,
.pr_protocol = IPPROTO_IPV6,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
.pr_input = encap6_input,
.pr_output = rip6_pr_output,
.pr_ctloutput = rip6_ctloutput,
.pr_init = encap6_init,
.pr_usrreqs = &rip6_usrreqs,
.pr_unlock = rip_unlock,
},
{
.pr_type = SOCK_RAW,
.pr_protocol = 0,
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
.pr_input = rip6_input,
.pr_output = rip6_pr_output,
.pr_ctloutput = rip6_ctloutput,
.pr_usrreqs = &rip6_usrreqs,
.pr_unlock = rip_unlock,
},
};
int in6_proto_count = (sizeof (inet6sw) / sizeof (struct ip6protosw));
struct domain inet6domain_s = {
.dom_family = PF_INET6,
.dom_flags = DOM_REENTRANT,
.dom_name = "internet6",
.dom_init = in6_dinit,
.dom_rtattach = in6_inithead,
.dom_rtoffset = offsetof(struct sockaddr_in6, sin6_addr) << 3,
.dom_maxrtkey = sizeof (struct sockaddr_in6),
.dom_protohdrlen = sizeof (struct sockaddr_in6),
};
void
in6_dinit(struct domain *dp)
{
struct ip6protosw *pr;
int i;
VERIFY(!(dp->dom_flags & DOM_INITIALIZED));
VERIFY(inet6domain == NULL);
inet6domain = dp;
_CASSERT(sizeof (struct protosw) == sizeof (struct ip6protosw));
_CASSERT(offsetof(struct ip6protosw, pr_entry) ==
offsetof(struct protosw, pr_entry));
_CASSERT(offsetof(struct ip6protosw, pr_domain) ==
offsetof(struct protosw, pr_domain));
_CASSERT(offsetof(struct ip6protosw, pr_protosw) ==
offsetof(struct protosw, pr_protosw));
_CASSERT(offsetof(struct ip6protosw, pr_type) ==
offsetof(struct protosw, pr_type));
_CASSERT(offsetof(struct ip6protosw, pr_protocol) ==
offsetof(struct protosw, pr_protocol));
_CASSERT(offsetof(struct ip6protosw, pr_flags) ==
offsetof(struct protosw, pr_flags));
_CASSERT(offsetof(struct ip6protosw, pr_input) ==
offsetof(struct protosw, pr_input));
_CASSERT(offsetof(struct ip6protosw, pr_output) ==
offsetof(struct protosw, pr_output));
_CASSERT(offsetof(struct ip6protosw, pr_ctlinput) ==
offsetof(struct protosw, pr_ctlinput));
_CASSERT(offsetof(struct ip6protosw, pr_ctloutput) ==
offsetof(struct protosw, pr_ctloutput));
_CASSERT(offsetof(struct ip6protosw, pr_usrreqs) ==
offsetof(struct protosw, pr_usrreqs));
_CASSERT(offsetof(struct ip6protosw, pr_init) ==
offsetof(struct protosw, pr_init));
_CASSERT(offsetof(struct ip6protosw, pr_drain) ==
offsetof(struct protosw, pr_drain));
_CASSERT(offsetof(struct ip6protosw, pr_sysctl) ==
offsetof(struct protosw, pr_sysctl));
_CASSERT(offsetof(struct ip6protosw, pr_lock) ==
offsetof(struct protosw, pr_lock));
_CASSERT(offsetof(struct ip6protosw, pr_unlock) ==
offsetof(struct protosw, pr_unlock));
_CASSERT(offsetof(struct ip6protosw, pr_getlock) ==
offsetof(struct protosw, pr_getlock));
_CASSERT(offsetof(struct ip6protosw, pr_filter_head) ==
offsetof(struct protosw, pr_filter_head));
_CASSERT(offsetof(struct ip6protosw, pr_old) ==
offsetof(struct protosw, pr_old));
for (i = 0, pr = &inet6sw[0]; i < in6_proto_count; i++, pr++)
net_add_proto((struct protosw *)pr, dp, 0);
for (i = 0, pr = &inet6sw[0]; i < in6_proto_count; i++, pr++)
net_init_proto((struct protosw *)pr, dp);
inet6_domain_mutex = dp->dom_mtx;
}
static int
rip6_pr_output(struct mbuf *m, struct socket *so, struct sockaddr_in6 *sin6,
struct mbuf *m1)
{
#pragma unused(m, so, sin6, m1)
panic("%s\n", __func__);
return (0);
}
#ifndef IPV6FORWARDING
#if GATEWAY6
#define IPV6FORWARDING 1
#else
#define IPV6FORWARDING 0
#endif
#endif
#ifndef IPV6_SENDREDIRECTS
#define IPV6_SENDREDIRECTS 1
#endif
int ip6_forwarding = IPV6FORWARDING;
int ip6_sendredirects = IPV6_SENDREDIRECTS;
int ip6_defhlim = IPV6_DEFHLIM;
int ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS;
int ip6_accept_rtadv = 1;
int ip6_log_interval = 5;
int ip6_hdrnestlimit = 15;
int ip6_dad_count = 1;
int ip6_auto_flowlabel = 1;
int ip6_gif_hlim = 0;
int ip6_use_deprecated = 1;
int ip6_rr_prune = 5;
int ip6_mcast_pmtu = 0;
int ip6_v6only = 0;
int ip6_neighborgcthresh = 1024;
int ip6_maxifprefixes = 16;
int ip6_maxifdefrouters = 16;
int ip6_maxdynroutes = 1024;
int ip6_only_allow_rfc4193_prefix = 0;
static int ip6_keepfaith = 0;
uint64_t ip6_log_time = 0;
int nd6_onlink_ns_rfc4861 = 0;
int pmtu_expire = 60*10;
int pmtu_probe = 60*2;
#define RIPV6SNDQ 8192
#define RIPV6RCVQ 8192
u_int32_t rip6_sendspace = RIPV6SNDQ;
u_int32_t rip6_recvspace = RIPV6RCVQ;
int icmp6_rediraccept = 1;
int icmp6_redirtimeout = 10 * 60;
int icmp6errppslim = 500;
int icmp6rappslim = 10;
int icmp6_nodeinfo = 3;
int udp6_sendspace = 9216;
int udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6));
SYSCTL_NODE(_net, PF_INET6, inet6,
CTLFLAG_RW | CTLFLAG_LOCKED, 0, "Internet6 Family");
SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6,
CTLFLAG_RW|CTLFLAG_LOCKED, 0, "IP6");
SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6,
CTLFLAG_RW|CTLFLAG_LOCKED, 0, "ICMP6");
SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6,
CTLFLAG_RW|CTLFLAG_LOCKED, 0, "UDP6");
SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6,
CTLFLAG_RW|CTLFLAG_LOCKED, 0, "TCP6");
#if IPSEC
SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6,
CTLFLAG_RW|CTLFLAG_LOCKED, 0, "IPSEC6");
#endif
static int
sysctl_ip6_temppltime SYSCTL_HANDLER_ARGS
{
#pragma unused(oidp, arg2)
int error = 0;
int old;
error = SYSCTL_OUT(req, arg1, sizeof(int));
if (error || !req->newptr)
return (error);
old = ip6_temp_preferred_lifetime;
error = SYSCTL_IN(req, arg1, sizeof(int));
if (ip6_temp_preferred_lifetime > ND6_MAX_LIFETIME ||
ip6_temp_preferred_lifetime <
ip6_desync_factor + ip6_temp_regen_advance) {
ip6_temp_preferred_lifetime = old;
return (EINVAL);
}
return (error);
}
static int
sysctl_ip6_tempvltime SYSCTL_HANDLER_ARGS
{
#pragma unused(oidp, arg2)
int error = 0;
int old;
error = SYSCTL_OUT(req, arg1, sizeof(int));
if (error || !req->newptr)
return (error);
old = ip6_temp_valid_lifetime;
error = SYSCTL_IN(req, arg1, sizeof(int));
if (ip6_temp_valid_lifetime > ND6_MAX_LIFETIME ||
ip6_temp_valid_lifetime < ip6_temp_preferred_lifetime) {
ip6_temp_valid_lifetime = old;
return (EINVAL);
}
return (error);
}
static int
ip6_getstat SYSCTL_HANDLER_ARGS
{
#pragma unused(oidp, arg1, arg2)
if (req->oldptr == USER_ADDR_NULL)
req->oldlen = (size_t)sizeof (struct ip6stat);
return (SYSCTL_OUT(req, &ip6stat, MIN(sizeof (ip6stat), req->oldlen)));
}
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING,
forwarding, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_forwarding, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS,
redirect, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_sendredirects, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM,
hlim, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_defhlim, 0, "");
SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_STATS, stats,
CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED,
0, 0, ip6_getstat, "S,ip6stat", "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV,
accept_rtadv, CTLFLAG_RD | CTLFLAG_LOCKED,
&ip6_accept_rtadv, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_KEEPFAITH,
keepfaith, CTLFLAG_RD | CTLFLAG_LOCKED, &ip6_keepfaith, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL,
log_interval, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_log_interval, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT,
hdrnestlimit, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_hdrnestlimit, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT,
dad_count, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_dad_count, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL,
auto_flowlabel, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_auto_flowlabel, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM,
defmcasthlim, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_defmcasthlim, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM,
gifhlim, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_gif_hlim, 0, "");
SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION,
kame_version, CTLFLAG_RD | CTLFLAG_LOCKED, (void *)((uintptr_t)(__KAME_VERSION)), 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED,
use_deprecated, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_use_deprecated, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE,
rr_prune, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_rr_prune, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR,
use_tempaddr, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_use_tempaddr, 0, "");
SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
CTLTYPE_INT|CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_temp_preferred_lifetime, 0,
sysctl_ip6_temppltime, "I", "");
SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
CTLTYPE_INT|CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_temp_valid_lifetime, 0,
sysctl_ip6_tempvltime, "I", "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY,
v6only, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_v6only, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL,
auto_linklocal, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_auto_linklocal, 0, "");
SYSCTL_STRUCT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, CTLFLAG_RD | CTLFLAG_LOCKED,
&rip6stat, rip6stat, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR,
prefer_tempaddr, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_prefer_tempaddr, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE,
use_defaultzone, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_use_defzone, 0,"");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU,
mcast_pmtu, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_mcast_pmtu, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NEIGHBORGCTHRESH,
neighborgcthresh, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_neighborgcthresh, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXIFPREFIXES,
maxifprefixes, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_maxifprefixes, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXIFDEFROUTERS,
maxifdefrouters, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_maxifdefrouters, 0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXDYNROUTES,
maxdynroutes, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_maxdynroutes, 0, "");
SYSCTL_INT(_net_inet6_ip6, OID_AUTO,
only_allow_rfc4193_prefixes, CTLFLAG_RW | CTLFLAG_LOCKED,
&ip6_only_allow_rfc4193_prefix, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT,
rediraccept, CTLFLAG_RW | CTLFLAG_LOCKED, &icmp6_rediraccept, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT,
redirtimeout, CTLFLAG_RW | CTLFLAG_LOCKED, &icmp6_redirtimeout, 0, "");
SYSCTL_STRUCT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, CTLFLAG_RD | CTLFLAG_LOCKED,
&icmp6stat, icmp6stat, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE,
nd6_prune, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_prune, 0, "");
SYSCTL_INT(_net_inet6_icmp6, OID_AUTO,
nd6_prune_lazy, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_prune_lazy, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY,
nd6_delay, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_delay, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES,
nd6_umaxtries, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_umaxtries, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES,
nd6_mmaxtries, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_mmaxtries, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK,
nd6_useloopback, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_useloopback, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ACCEPT_6TO4,
nd6_accept_6to4, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_accept_6to4, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO,
nodeinfo, CTLFLAG_RW | CTLFLAG_LOCKED, &icmp6_nodeinfo, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT,
errppslimit, CTLFLAG_RW | CTLFLAG_LOCKED, &icmp6errppslim, 0, "");
SYSCTL_INT(_net_inet6_icmp6, OID_AUTO,
rappslimit, CTLFLAG_RW | CTLFLAG_LOCKED, &icmp6rappslim, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG,
nd6_debug, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_debug, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
nd6_onlink_ns_rfc4861, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_onlink_ns_rfc4861, 0,
"Accept 'on-link' nd6 NS in compliance with RFC 4861.");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_OPTIMISTIC_DAD,
nd6_optimistic_dad, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_optimistic_dad, 0, "");