From 95f7daf1c058dc6afbc2d33b6a65ce1bae132dc8 Mon Sep 17 00:00:00 2001 From: Horms Date: Thu, 2 Feb 2006 17:02:25 -0800 Subject: [PATCH] [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 Signed-off-by: David S. Miller --- Documentation/networking/ip-sysctl.txt | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) 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