ipcomp

I have just got ipcomp working between 2 hosts as follows:

• Install the ipsec-tools program
• Add the following config to /etc/ipsec-tools.d/peername.conf
  
  spdadd MY_IP PEER_IP any -P out ipsec ipcomp/transport//use;
  add MY_IP PEER_IP ipcomp 1000 -m transport -C deflate;

  spdadd PEER_IP MY_IP any -P in ipsec ipcomp/transport//use;
  add PEER_IP MY_IP ipcomp 1000 -m transport -C deflate;