Aurele,

One possible issue is ${sysconfdir}/network/interfaces is listed in the CONFFILES in the original recipe.  It may still be installing this file because it is listed under CONFFILES.  Try adding:

CONFFILES_${PN} = ""

To your bbappend.

Regards,
Bryan

> -----Original Message-----
> From: yocto-bounces@... [mailto:yocto-
> bounces@...] On Behalf Of Aurele Traynard
> Sent: Friday, February 06, 2015 10:55 AM
> To: yocto@...
> Subject: [yocto] replace etc/network/interfaces with symbolic link
>
> Hi,
>
>
> I'm trying to find a clean way to replace /etc/network/interfaces with a
> symbolic link. (it comes with init-ifupdown recipe) I tried with  a bbappend
> but nothing appear in final filesystem and /etc/network/interfaces still
> exists...
>
>
> I'm sure the following code is completely wrong, but I don't know how to do
> this with the right way...
> do_install_append () {
>     mkdir -p datas/network
>
>     install -d 0755 ${D}/datas
>     install -d 0755 ${D}/datas/network
>     install -m 0755 ${D}${sysconfdir}/network/interfaces ${D}/datas/network
>     #mv ${D}${sysconfdir}/network/interfaces ${D}/datas/network
>     rm ${D}${sysconfdir}/network/interfaces
>     ln -sf /datas/network/interfaces ${D}${sysconfdir}/network/interfaces
>
> }
> FILES_${PN} += "/datas/ /datas/network/interfaces"
>
>
> thanks for any help
>