avoid eth0 ip addr and wlan0 ip addr on same subnet

[rudiratlos]

/lib/dhcpcd/dhcpcd-hooks/10-wpa_supplicant:

if [ -z "$wpa_supplicant_conf" ]; then
for x in
/etc/wpa_supplicant/wpa_supplicant-"$interface".conf
/etc/wpa_supplicant/wpa_supplicant.conf
/etc/wpa_supplicant-"$interface".conf
/etc/wpa_supplicant.conf
; do
if [ -s "$x" ]; then
wpa_supplicant_conf="$x"
break
fi
done
fi
: ${wpa_supplicant_conf:=/etc/wpa_supplicant.conf}

if [ "$ifwireless" = "1" ] &&
type wpa_supplicant >/dev/null 2>&1 &&
type wpa_cli >/dev/null 2>&1
then
if [ "$reason" = "IPV4LL" ]; then
date >> /var/log/wpa_supplicant.log
wpa_supplicant -B -iwlan0 -f/var/log/wpa_supplicant.log -c/etc/wpa_supplicant/wpa_supplicant.conf
fi
if [ "$reason" = "BOUND" ] && [ "$interface" = "wlan0" ]; then
date >>/var/log/wpa_supplicant.log
wlan0_ip=ip addr show dev wlan0 | awk '/inet / { print $2 }'
wlan0_subn=ip addr show dev wlan0 | awk '/inet / { print $4 }'
eth0_subn=ip addr show dev eth0 | awk '/inet / { print $4 }'
echo BOUND interface:$interface if_up:$if_up $wlan0_ip >>/var/log/wpa_supplicant.log

if [ "$eth0_subn" = "$wlan0_subn" ]; then
  echo "eth0 wlan0 on same subnet $wlan0_subn, flush ip from wlan0" >>/var/log/wpa_supplicant.log
  ip addr flush dev wlan0 >>/var/log/wpa_supplicant.log 2>&1
fi

fi
fi