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Commit 95f7daf1 authored by Horms's avatar Horms Committed by David S. Miller
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[IPV4]: Document icmp_errors_use_inbound_ifaddr sysctl 



Taken largely from the commit of the patch that added this feature:

1c2fb7f9

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: default avatarHorms <horms@verge.net.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6f4b6ec1

Documentation/networking/ip-sysctl.txt

+17 −0
Original line number Diff line number Diff line
@@ -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