Hi
Many things happened since my first message: I first had
to get rid of connman (connection manager), which insisted to preset
iptables rules without any notice. My Debian box is uset as a DNS
chrooted server (also I had to modify bind9.service behaviour), and I
use iptables to do NAT, since I have one routable address for several
clients. With Jessie I managed to have all this working. When
upgrading to stretch, because of a stupid error with grub on my RAID
system, and of an insufficient backup, I lost most of my config. Thanks
for your help. When everything will be OK, I surely will have the use
for your answers.
Jacques
