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Commit ae8abfa0 authored by Thomas Graf's avatar Thomas Graf Committed by David S. Miller
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ipv6: Update ip-sysctl.txt documentation for recent changes to accept_ra and forwarding 



Documentation for recent changes to the tunables accept_ra and
forwarding.

Signed-off-by: default avatarThomas Graf <tgraf@infradead.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c3bccac2

Documentation/networking/ip-sysctl.txt

+22 −5
Original line number Diff line number Diff line
@@ -1014,6 +1014,12 @@ conf/interface/*: 
accept_ra - BOOLEAN

	Accept Router Advertisements; autoconfigure using them.



	Possible values are:

		0 Do not accept Router Advertisements.

		1 Accept Router Advertisements if forwarding is disabled.

		2 Overrule forwarding behaviour. Accept Router Advertisements

		  even if forwarding is enabled.



	Functional default: enabled if local forwarding is disabled.

			    disabled if local forwarding is enabled.
@@ -1075,7 +1081,12 @@ forwarding - BOOLEAN 
	Note: It is recommended to have the same setting on all

	interfaces; mixed router/host scenarios are rather uncommon.



	FALSE:

	Possible values are:

		0 Forwarding disabled

		1 Forwarding enabled

		2 Forwarding enabled (Hybrid Mode)



	FALSE (0):



	By default, Host behaviour is assumed.  This means:
@@ -1085,18 +1096,24 @@ forwarding - BOOLEAN 
	   Advertisements (and do autoconfiguration).

	4. If accept_redirects is TRUE (default), accept Redirects.



	TRUE:

	TRUE (1):



	If local forwarding is enabled, Router behaviour is assumed.

	This means exactly the reverse from the above:



	1. IsRouter flag is set in Neighbour Advertisements.

	2. Router Solicitations are not sent.

	3. Router Advertisements are ignored.

	3. Router Advertisements are ignored unless accept_ra is 2.

	4. Redirects are ignored.



	Default: FALSE if global forwarding is disabled (default),

		 otherwise TRUE.

	TRUE (2):



	Hybrid mode. Same behaviour as TRUE, except for:



	2. Router Solicitations are being sent when necessary.



	Default: 0 (disabled) if global forwarding is disabled (default),

		 otherwise 1 (enabled).



hop_limit - INTEGER

	Default Hop Limit to set.