relayd shows ssh sessions as idle

Hi,

I have configured relayd(8) on my vmd(8) host so that I can connect to
the running VMs using SSH.

Using relayctl(8), I can see that those sessions have the same value for
age and idle ; even when something happens in the SSH sessions.

Is this expected or an error in my relayd.conf ?

Thanks.

####
# config snippet

protocol sshtcp {
tcp { nodelay, socket buffer 65536 }
}
relay ssh_vm1 {
listen on $public_ip port 8022
protocol sshtcp
transparent forward to $vm1 port 8022
session timeout 28800
}
#
####