I got help from the debian-live list (chals)
the file auto/config must be :
#!/bin/sh
set -e
lb config noauto \
--architecture amd64 \
--bootappend-live "boot=live ip=frommedia persistence
locales=fr_FR.UTF-8 keyboard-layouts=fr" \
--archive-areas "main contrib non-free" \
--debug \
"${@}"
and in the file persistence.conf "/ union" gives global persistence.
ip=frommedia provides the persistence of /etc/network/interfaces
man live-boot for an explanation (thanks chals)
The problem with non-free miraculously disappeared ... ?
--
Gerard
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