Hello, I've came across with the same problem and I think that the attached patch could do the job to fix this weird scenario. It looks if file already exists and only overwrites it "in-target" if it doesn't.
Since '/e/n/i' is already written by 'debian-installer' itself in previous steps, I think it makes no sense to overwrite it again when installation is almost complete. It doesn't make sense neither if the file already exists for any reason (in e.g.: you create it in any other installation step like the case mentioned in 'debian-users' list [1]), so the only case I think it makes sense to set the '/e/n/i' file at that installation stage is if there isn't one already. Hope it helps. [1] https://lists.debian.org/debian-user/2013/05/msg01012.html
diff --git a/finish-install.d/55netcfg-copy-config b/finish-install.d/55netcfg-copy-config index c1d2906..23ed968 100755 --- a/finish-install.d/55netcfg-copy-config +++ b/finish-install.d/55netcfg-copy-config @@ -69,6 +69,9 @@ fi # be done if the /e/n/i option is chosen, since /e/n/i gets copied in any # situation. mkdir -p /target$(dirname $FILE_INTERFACES) -cp $FILE_INTERFACES /target$FILE_INTERFACES +if [ ! -e /target$FILE_INTERFACES ] +then + cp $FILE_INTERFACES /target$FILE_INTERFACES +fi exit 0
