ipv6 addrconf: add accept_dad sysctl to control DAD operation.
- If 0, disable DAD.
- If 1, perform DAD (default).
- If >1, perform DAD and disable IPv6 operation if DAD for MAC-based
link-local address has been failed (RFC4862 5.4.5).
We do not follow RFC4862 by default. Refer to the netdev thread entitled
"Linux IPv6 DAD not full conform to RFC 4862 ?"
http://www.spinics.net/lists/netdev/msg52027.html
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index d9d7f9b..391ad08 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -164,6 +164,7 @@
__s32 mc_forwarding;
#endif
__s32 disable_ipv6;
+ __s32 accept_dad;
void *sysctl;
};
@@ -196,6 +197,7 @@
DEVCONF_ACCEPT_SOURCE_ROUTE,
DEVCONF_MC_FORWARDING,
DEVCONF_DISABLE_IPV6,
+ DEVCONF_ACCEPT_DAD,
DEVCONF_MAX
};