The commit a2d3f3e33853 modifies the way to disable dad on an interface.
Before the patch, setting <iface>.accept_dad to 0 was enough to disable it.
Because all.accept_dad is set to 1 by default, after the patch, the user
needs to set both all.accept_dad and <iface>.accept_dad to 0 to disable it.
This is not backward compatible. When a user updates its kernel, the dad
may be enabled by error.
Let's set all.accept_dad to 0 by default to restore the previous behavior.
Fixes: a2d3f3e33853 ("ipv6: fix net.ipv6.conf.all.accept_dad behaviour for
real")
CC: Stefano Brivio <[email protected]>
CC: Matteo Croce <[email protected]>
CC: Erik Kline <[email protected]>
Signed-off-by: Nicolas Dichtel <[email protected]>
---
net/ipv6/addrconf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 8a1c846d3df9..ef5b61507b9a 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -231,7 +231,7 @@ static struct ipv6_devconf ipv6_devconf __read_mostly = {
.proxy_ndp = 0,
.accept_source_route = 0, /* we do not accept RH0 by default. */
.disable_ipv6 = 0,
- .accept_dad = 1,
+ .accept_dad = 0,
.suppress_frag_ndisc = 1,
.accept_ra_mtu = 1,
.stable_secret = {
--
2.13.2
