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-rw-r--r--Documentation/networking/ip-sysctl.txt19
1 files changed, 17 insertions, 2 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index ebe94f2cab98..99838259e2e6 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -884,8 +884,8 @@ icmp_ignore_bogus_error_responses - BOOLEAN
icmp_errors_use_inbound_ifaddr - BOOLEAN
- If zero, icmp error messages are sent with the primary address of
- the exiting interface.
+ If zero, icmp error messages except redirects 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.
@@ -897,8 +897,23 @@ icmp_errors_use_inbound_ifaddr - BOOLEAN
then the primary address of the first non-loopback interface that
has one will be used regardless of this setting.
+ The source address selection of icmp redirect messages is controlled by
+ icmp_errors_use_inbound_ifaddr.
Default: 0
+icmp_redirects_use_orig_daddr - BOOLEAN
+
+ If zero, icmp redirect messages are sent using the address specified for
+ other icmp errors by icmp_errors_use_inbound_ifaddr.
+
+ If non-zero, the message will be sent with the destination address of
+ the packet that caused the icmp redirect.
+ This behaviour is the preferred one on VRRP routers (see RFC 5798
+ section 8.1.1).
+
+ Default: 0
+
+
igmp_max_memberships - INTEGER
Change the maximum number of multicast groups we can subscribe to.
Default: 20