From 9792465a8ddd55f49e8994d4abf0a78652992caf Mon Sep 17 00:00:00 2001
From: Michael Prokop <mika@grml.org>
Date: Fri, 25 May 2018 12:03:37 +0200
Subject: [PATCH] netcardconfig: switch from ifconfig to ip(8)

The output of ifconfig changed in recent versions, breaking
parsing the available interfaces. Use that as a good excuse
for switching from ifconfig to ip.

The 's/@.*//' is required to strip the '@ethX0' from the interface
names 'vlan42@eth0', since in /sys/class/net/ only vlan42 exists
as such and not vlan42@eth0.
---
 sbin/netcardconfig | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sbin/netcardconfig b/sbin/netcardconfig
index d85404f..e3d0d11 100755
--- a/sbin/netcardconfig
+++ b/sbin/netcardconfig
@@ -56,7 +56,7 @@ writeiwline() {
 
   for mod in /sys/module/rt2??0/ ; do
     if [ -d "$mod" ]; then
-      IWPREUPLINE="$IWPREUPLINE pre-up /sbin/ifconfig $DV up\n"
+      IWPREUPLINE="$IWPREUPLINE pre-up /sbin/ip link set $DV up\n"
       break
     fi
   done
@@ -93,7 +93,7 @@ generate_udev_entry() {
 # Executing this script generates an entry in /etc/udev/rules.d/z25_persistent-net.rules
 # for you, please check z25_persistent-net.rules for existing entries before
 # running this script (once more)." > /etc/udev/scripts/netcardconfig
-  for interface in $(ifconfig | awk '/^[a-z]/ &&!/^lo/{ print $1} ') ; do
+  for interface in $(ip -oneline link | awk '!/ lo: / {print $2}' | sed 's/:$//; s/@.*//') ; do
       echo -n "INTERFACE=$interface /lib/udev/write_net_rules " >> /etc/udev/scripts/netcardconfig && \
       if which udevadm >/dev/null 2>&1; then
         udevadm info -a -p "/sys/class/net/$interface" | awk -F'==' '/address/ {print $2}' >> /etc/udev/scripts/netcardconfig
@@ -158,7 +158,7 @@ remauto(){
 
 scanwlan(){
   i=0
-  ifconfig "$DV" up
+  ip link set "$DV" up
   iwlist "$DV" scanning | grep "ESSID\|Quality" | sed -e "s/^.*ESSID:\"\|\"$//g" | tac > "$TMP"
   while read -r line
   do
-- 
2.1.4