OT - nfs hangs

Hello all, I understand this has nothing to do with trinity, but there seem to be people on this list that understand this stuff more than I do. I've got an older machine (quad core) that I wanted to convert in a network backup. It runs Jessie and mounts an nfs share on my main machine so that I can copy important files. The problem occurs when I transfer bigger quantities of data (I mean several GB, mostly in smaller files of a few hundred MB): - If the server runs Debian stretch, everything is fine. - If the server runs AntiX 17, the copy sooner or later hangs because the server lost the network (the message I got is err_network_changed). there may be another way but I solve the problem by restarting teh machine. Now, the question is this: AntiX 17 is based on stretch. It does not run systemd, nor does it network manager. Network configuration is done with ceni (method static, class auto). The exports file is the same in both cases (copied from Debian to AntiX). If anyone has a clue to give me where to look for this difference in behaviour, I'd be glad! I like AntiX because of no systemd, but... Thierry