A very strange low id problem

[mmassi]

Hello,
I have mldonkey running on a Raspberry PI.
Everything was ok until I reinstalled the whole system.

Now, with a fresh new install (ideally the same as before), there's no way for me to get a high id.

Note that:
- I have appropriate firewall rules on the router,
- porttest for donkey is successful (both tcp and udp), and
- also other web based port scanners confirm that the two relevant ports are open (right now the IP is 151.66.217.199, ports are 19010 TCP and 19014 UDP, and anyway on the router I have opened 19010-19014 TCP-UDP just to be sure).

I also tried to set the machine as default DMZ host, nothing changed.
When I see the "servers" tab in the web interface every server gives me a low id.

For comleteness, iptables on the machine gives this:

root@PI:/data# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

which should mean I have no firewall at all, the only firewall is the router.

Any clues?
Thanks!
Massi