From 7b2737bf5fbb1c5fa597f60d4adbe80521e56717 Mon Sep 17 00:00:00 2001
From: nachoparker <nacho@ownyourbits.com>
Date: Mon, 18 Jun 2018 15:00:37 +0200
Subject: nc-static-IP: autodetect default interface

---
 etc/ncp-config.d/nc-static-IP.sh | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

(limited to 'etc')

diff --git a/etc/ncp-config.d/nc-static-IP.sh b/etc/ncp-config.d/nc-static-IP.sh
index 30f5e9bd..25e089d9 100644
--- a/etc/ncp-config.d/nc-static-IP.sh
+++ b/etc/ncp-config.d/nc-static-IP.sh
@@ -18,6 +18,8 @@ configure()
   local GW="$( ip r | grep "default via"   | awk '{ print $3 }' )"
   local DNS="$( grep nameserver /etc/resolv.conf | head -1 | awk '{ print $2 }' )"
   [[ "$DNS" == "" ]] && DNS="$GW"
+  local IFACE="$( ip r | grep "default via" | awk '{ print $5 }' | head -1 )"
+  [[ "$IFACE" == "" ]] && { echo "Couldn't find default interface"; exit 1; }
 
   ## DHCPCD
   [[ -f /etc/dhcpcd.conf ]] && {
@@ -34,7 +36,7 @@ configure()
     cat >> /etc/dhcpcd.conf <<EOF
 # NextCloudPi autogenerated
 # don't modify! better use ncp-config
-interface eth0
+interface $IFACE
 static ip_address=$IP_/24
 static routers=$GW
 static domain_name_servers=$DNS
@@ -53,10 +55,10 @@ EOF
     [[ $ACTIVE_ != "yes" ]] && {
       cat > /etc/network/interfaces <<EOF
 # Wired adapter #1
-allow-hotplug eth0
-no-auto-down eth0
-auto eth0
-iface eth0 inet dhcp
+allow-hotplug $IFACE
+no-auto-down $IFACE
+auto $IFACE
+iface $IFACE inet dhcp
 
 # Local loopback
 auto lo
@@ -75,10 +77,10 @@ source /etc/network/interfaces.d/*
 auto lo
 iface lo inet loopback
 
-# Interface eth0
-auto eth0
-allow-hotplug eth0
-iface eth0 inet static
+# Interface $IFACE
+auto $IFACE
+allow-hotplug $IFACE
+iface $IFACE inet static
     address $IP_
     netmask 255.255.255.0
     gateway $GW
-- 
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