[IPV6]: ROUTE: Add router_probe_interval sysctl.

[net-next-2.6.git] / Documentation / networking / ip-sysctl.txt

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index ebc09a159f6220d995ab39c3bbff812291f4659d..88efed0a533f305c834c47c19bfa9c83378251f4 100644 (file)
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -46,6 +46,29 @@ ipfrag_secret_interval - INTEGER
        for the hash secret) for IP fragments.
        Default: 600
 
+ipfrag_max_dist - INTEGER
+       ipfrag_max_dist is a non-negative integer value which defines the 
+       maximum "disorder" which is allowed among fragments which share a 
+       common IP source address. Note that reordering of packets is 
+       not unusual, but if a large number of fragments arrive from a source 
+       IP address while a particular fragment queue remains incomplete, it 
+       probably indicates that one or more fragments belonging to that queue 
+       have been lost. When ipfrag_max_dist is positive, an additional check 
+       is done on fragments before they are added to a reassembly queue - if 
+       ipfrag_max_dist (or more) fragments have arrived from a particular IP 
+       address between additions to any IP fragment queue using that source 
+       address, it's presumed that one or more fragments in the queue are 
+       lost. The existing fragment queue will be dropped, and a new one 
+       started. An ipfrag_max_dist value of zero disables this check.
+
+       Using a very small value, e.g. 1 or 2, for ipfrag_max_dist can
+       result in unnecessarily dropping fragment queues when normal
+       reordering of packets occurs, which could lead to poor application 
+       performance. Using a very large value, e.g. 50000, increases the 
+       likelihood of incorrectly reassembling IP fragments that originate 
+       from different IP datagrams, which could result in data corruption.
+       Default: 64
+
 INET peer storage:
 
 inet_peer_threshold - INTEGER
@@ -404,6 +427,23 @@ icmp_ignore_bogus_error_responses - BOOLEAN
        will avoid log file clutter.
        Default: FALSE
 
+icmp_errors_use_inbound_ifaddr - BOOLEAN
+
+       If zero, icmp error messages are sent with the primary address of
+       the exiting interface.
+ 
+       If non-zero, the message will be sent with the primary address of
+       the interface that received the packet that caused the icmp error.
+       This is the behaviour network many administrators will expect from
+       a router. And it can make debugging complicated network layouts
+       much easier. 
+
+       Note that if no primary address exists for the interface selected,
+       then the primary address of the first non-loopback interface that
+       has one will be used regarldess of this setting.
+
+       Default: 0
+
 igmp_max_memberships - INTEGER
        Change the maximum number of multicast groups we can subscribe to.
        Default: 20
@@ -677,6 +717,24 @@ accept_ra - BOOLEAN
        Functional default: enabled if local forwarding is disabled.
                            disabled if local forwarding is enabled.
 
+accept_ra_defrtr - BOOLEAN
+       Learn default router in Router Advertisement.
+
+       Functional default: enabled if accept_ra is enabled.
+                           disabled if accept_ra is disabled.
+
+accept_ra_pinfo - BOOLEAN
+       Learn Prefix Inforamtion in Router Advertisement.
+
+       Functional default: enabled if accept_ra is enabled.
+                           disabled if accept_ra is disabled.
+
+accept_ra_rtr_pref - BOOLEAN
+       Accept Router Preference in RA.
+
+       Functional default: enabled if accept_ra is enabled.
+                           disabled if accept_ra is disabled.
+
 accept_redirects - BOOLEAN
        Accept Redirects.
 
@@ -687,8 +745,8 @@ autoconf - BOOLEAN
        Autoconfigure addresses using Prefix Information in Router 
        Advertisements.
 
-       Functional default: enabled if accept_ra is enabled.
-                           disabled if accept_ra is disabled.
+       Functional default: enabled if accept_ra_pinfo is enabled.
+                           disabled if accept_ra_pinfo is disabled.
 
 dad_transmits - INTEGER
        The amount of Duplicate Address Detection probes to send.
@@ -731,6 +789,12 @@ mtu - INTEGER
        Default Maximum Transfer Unit
        Default: 1280 (IPv6 required minimum)
 
+router_probe_interval - INTEGER
+       Minimum interval (in seconds) between Router Probing described
+       in RFC4191.
+
+       Default: 60
+
 router_solicitation_delay - INTEGER
        Number of seconds to wait after interface is brought up
        before sending Router Solicitations.