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authorHorms <horms@verge.net.au>2006-02-02 17:02:25 -0800
committerDavid S. Miller <davem@davemloft.net>2006-02-02 17:02:25 -0800
commit95f7daf1c058dc6afbc2d33b6a65ce1bae132dc8 (patch)
tree47b6d056cba5339643ac39775864aeb904f0f848 /Documentation/networking
parent6f4b6ec1cffcbb12cc47244381496d59b6a5a790 (diff)
[IPV4]: Document icmp_errors_use_inbound_ifaddr sysctl
Taken largely from the commit of the patch that added this feature: 1c2fb7f93cb20621772bf304f3dba0849942e5db I'm not sure about the ordering of the options in sysctl.txt, so I took a wild guess about where it fits. Signed-Off-By: Horms <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/ip-sysctl.txt17
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 2b7cf19a06ad..26364d06ae92 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -427,6 +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