As mentioned in http://bugzilla.kernel.org/show_bug.cgi?id=5015
The helptext implies that this is on by default.
This may be true on some distros (Fedora/RHEL have it enabled
in /etc/sysctl.conf), but the kernel defaults to it off.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
asymmetric routing (packets from you to a host take a different path
than packets from that host to you) or if you operate a non-routing
host which has several IP addresses on different interfaces. To turn
- rp_filter off use:
+ rp_filter on use:
- echo 0 > /proc/sys/net/ipv4/conf/<device>/rp_filter
+ echo 1 > /proc/sys/net/ipv4/conf/<device>/rp_filter
or
- echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter
+ echo 1 > /proc/sys/net/ipv4/conf/all/rp_filter
If unsure, say N here.