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Index: sys/netinet6/in6_proto.c
===================================================================
--- sys/netinet6/in6_proto.c
+++ sys/netinet6/in6_proto.c
@@ -517,15 +517,23 @@
}
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding,
- CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0, "");
+ CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0,
+ "Enable forwarding of IPv6 packets between interfaces");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect,
- CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0, "");
+ CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0,
+ "Enable sending of ICMPv6 redirects in response to unforwardable IPv6"
+ " packets. This option is ignored unless the node is routing IPv6"
+ " packets");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim, CTLFLAG_VNET | CTLFLAG_RW,
- &VNET_NAME(ip6_defhlim), 0, "");
+ &VNET_NAME(ip6_defhlim), 0,
+ "Default hop limit to use for outgoing IPv6 packets");
SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat,
ip6stat, "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets,
- CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0, "");
+ CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0,
+ "Default number of fragmented packets this node will accept."
+ " A value of 0 means no fragmented packets will be accepted, while a"
+ " value of -1 means no limit");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0,
"Default value of per-interface flag for accepting ICMPv6 Router"
@@ -534,31 +542,43 @@
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0,
"Default value of per-interface flag to control whether routers "
"sending ICMPv6 RA messages on that interface are added into the "
- "default router list.");
+ "default router list");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0,
"Always set 0 to R flag in ICMPv6 NA messages when accepting RA"
- " on the interface.");
+ " on the interface");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0,
"Accept the default router list from ICMPv6 RA messages even "
- "when packet forwarding enabled.");
+ "when packet forwarding enabled");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval,
- CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0, "");
+ CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0,
+ "Default interval in seconds between IPv6 packet forwarding engine log"
+ " output");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit,
- CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0, "");
+ CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0,
+ "Default maximum number of IPv6 extension headers permitted on"
+ " incoming IPv6 packets. A value of 0 means no artificial limit");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count,
- CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0, "");
+ CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0,
+ "Default number of IPv6 DAD (duplicated address detection) probe packets");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel,
- CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0, "");
+ CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0,
+ "Enable/disable automatic filling of the IPv6 flowlabel field");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim,
- CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0, "");
+ CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0,
+ "Default hop limit for an IPv6 multicast packet originating from this"
+ " node");
SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version,
- CTLFLAG_RD, __KAME_VERSION, 0, "");
+ CTLFLAG_RD, __KAME_VERSION, 0,
+ "Identify the version of this node's KAME IPv6 stack");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated,
- CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0, "");
+ CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0,
+ "Enable use of deprecated addresses specified in RFC2462 5.5.4");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune,
- CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0, "");
+ CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0,
+ "Default interval in seconds for babysitting of IPv6 router prefix"
+ " renumbering");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0, "");
SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
@@ -570,7 +590,9 @@
&VNET_NAME(ip6_temp_valid_lifetime), 0,
sysctl_ip6_tempvltime, "I", "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only,
- CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0, "");
+ CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0,
+ "Restrict sockets listening on the wildcard address [::] to IPv6"
+ " addresses");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0,
"Default value of per-interface flag for automatically adding an IPv6"
@@ -615,7 +637,7 @@
nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0,
"Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup"
- " for compatibility with KAME implememtation.");
+ " for compatibility with KAME implememtation");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint,
@@ -625,4 +647,4 @@
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(nd6_onlink_ns_rfc4861), 0,
- "Accept 'on-link' nd6 NS in compliance with RFC 4861.");
+ "Accept 'on-link' nd6 NS in compliance with RFC 4861");

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