1) Add BACKUP_FILE and use it when copying an archive to be restored
after sysupgrade (on the next preinit).
2) Use CONF_TAR for copying backup prepared by the /sbin/sysupgrade
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
ifconfig is effectively deprecated for quite some time now. Let's
replace the remaining occurrences for our target setup by the
corresponding ip commands now.
Note that this does not touch ar71xx, as it will be dropped anyway,
and changing it would only make backports harder.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
