iwinfo: continue scanning even if temporary mac cannot be changed

So far iwinfo aborted a wifi scan attempt if the mac of the spawned
interface could not be changed. Change the code to try anyway - this
should fix wifi scanning on RaLink devices.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41826 3c298f89-4303-0410-b956-a3cf2f4a3e73
mac80211: merge a few WDS-AP related fixes (#14756, #16802)

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41827 3c298f89-4303-0410-b956-a3cf2f4a3e73
hostapd: prevent spurious 20/40 mhz channel bandwidth switches if noscan is enabled

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41828 3c298f89-4303-0410-b956-a3cf2f4a3e73
iwinfo: fix secondary radios being misreported as ralink device

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41829 3c298f89-4303-0410-b956-a3cf2f4a3e73
iwinfo: avoid creating tmp.* ifaces for scanning

If the iface to scan on already is in ad-hoc, station or monitor mode
then do not spawn a temporary iface.

Also preventively disable IPv6 on temporary ifaces before bringing them
up to avoid potential security issues.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41830 3c298f89-4303-0410-b956-a3cf2f4a3e73
netifd: update to the latest version, fixes a race condition with renew/setup

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41831 3c298f89-4303-0410-b956-a3cf2f4a3e73
Merge remote-tracking branch 'openwrt/master'