Ldirectord and tunneling

[Brian Sheets <bsheets@xxxxxxxxxxxxx>]

I have 2 real servers on different networks,

If I understand correctly, I should be able to use tunneling to forward to
the real server on the different network.

Here is my config

virtual=172.16.13.40:25
        real=172.16.13.41:25 gate
        real=172.16.13.42:25 gate
        real=172.27.20.80:25 ipip
        protocol=tcp
        service=smtp
        checktype=connect
        scheduler=wlc

And on the real server

auto tunl0
iface tunl0 inet static
  address 172.16.13.40
  netmask 255.255.255.255
  pre-up ifconfig tunl0 0.0.0.0 up ; sysctl -p > /dev/null


I also have the appropriate /etc/sysctl.conf, /etc/network/options entries.

When I bring up ldirectord it adds all real servers, but I can't connect via
the vip.

Ideas what I'm missing?

Thanks