isakmpd only works if one side begins the communication

[Abel Talaverón Estevez]

Hi all,

I'm working with a firewall running OpenBSD with isakmpd. When I want to 
connect 2 or more firewalls, I can see the tunnels via: "netstat -rn | grep 
encap" but the only way to begin the real communication is starting it by one 
of the sides. If a try to begin with the other side it doesn't work until I 
do a ping (or some kind of communication) from the other side.

Is it normal? Can I solve it with a parameter like "Retransmit" or "Timeout"? 
I know that it happens something similar with D-Link Firewalls.

Thanks!!