14.04 /etc/network/interfaces is always overwritten by Preseed

[Matt .]

I have sent this to the wrong mailinglist earlier.

Hi All,

I'm having trouble with my /etc/network/interfaces file that is
overwritten by every Preseed install.

I have found out that when I let the late_command crash and I manually
enter some identifier in:

/etc/network/interfaces

and

/target/etc/network/interfaces

the one in /etc/network/interfaces stays there, so no overwriting from
the target version in that case.

the fix to place the following in the late_command doesn't fix it either:

cp /target/etc/network/interfaces /etc/network/interfaces

Any idea on how to fix this ?

Thanks!