iptables + TEE doesn't work correctly
On my server, I want to duplicate all the traffic to an other host.
I use iptables with TEE module :
iptables -t mangle -A PREROUTING -i eth0 -j TEE --gateway IP_SERVER2
I check the rule : iptables -t mangle -L
=> The rule is here but it doesn't work... The other server receive nothing.
when I do a tcpdump : tcpdump dst IP_SERVER2
=> 0 packets received by filter
I tried to enable /proc/sys/net/ipv4/ip_forward, /proc/sys/net/ipv4/conf/all/accept_redirects, /proc/sys/net/ipv4/conf/all/send_redirects.
I changed to 1 the net.ipv4.ip_forward option in /etc/sysctl.conf, it still doesn't work.
Have you got an idea what's wrong?