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net: add ARP notify option for devices

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This adds another inet device option to enable gratuitous ARP
when device is brought up or address change. This is handy for
clusters or virtualization.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
2009-02-01 01:04:33 -08:00
committed by David S. Miller
parent ead731837d
commit eefef1cf76
5 changed files with 18 additions and 0 deletions
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6
Documentation/networking/ip-sysctl.txt
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@@ -782,6 +782,12 @@ arp_ignore - INTEGER
The max value from conf/{all,interface}/arp_ignore is used
when ARP request is received on the {interface}
arp_notify - BOOLEAN
Define mode for notification of address and device changes.
0 - (default): do nothing
1 - Generate gratuitous arp replies when device is brought up
or hardware address changes.
arp_accept - BOOLEAN
Define behavior when gratuitous arp replies are received:
0 - drop gratuitous arp frames