From 26f2e448d55cba0b1823b4920cf311ed8892666f Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Thu, 22 Aug 2013 10:47:54 +0200
Subject: [rootfs-stage31] Make MAC addresses lowercase, as udev fails to match
 a rule with uppercase letters in hex

---
 remote/rootfs/rootfs-stage31/data/bin/setup_network | 2 +-
 remote/rootfs/rootfs-stage31/data/init              | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/remote/rootfs/rootfs-stage31/data/bin/setup_network b/remote/rootfs/rootfs-stage31/data/bin/setup_network
index 8e070bdf..b504a92b 100755
--- a/remote/rootfs/rootfs-stage31/data/bin/setup_network
+++ b/remote/rootfs/rootfs-stage31/data/bin/setup_network
@@ -26,7 +26,7 @@ IP_OUT=$(ip a | grep -B 1 "/ether" | sed -r '/^--$/d;$!N;s#^[0-9]+: ([a-z0-9\.:]
 
 for LINE in $IP_OUT; do
 	IFACE=$(echo "$LINE" | awk -F '==' '{printf $1}')
-	IFMAC=$(echo "$LINE" | awk -F '==' '{printf $2}' | tr '[a-z]' '[A-Z]')
+	IFMAC=$(echo "$LINE" | awk -F '==' '{printf $2}' | tr '[A-Z]' '[a-z]') # udev requires mac addesses to be lowercase (a-f), see http://www.debianhelp.co.uk/udev.htm
 	echo "${IFACE} = ${IFMAC}"
 	
 	if [ "x$IFMAC" == "x$MAC" ]; then
diff --git a/remote/rootfs/rootfs-stage31/data/init b/remote/rootfs/rootfs-stage31/data/init
index db4ef484..838892e5 100755
--- a/remote/rootfs/rootfs-stage31/data/init
+++ b/remote/rootfs/rootfs-stage31/data/init
@@ -64,7 +64,7 @@ for opts in ${KCL}; do
 			export NFSSERVER=${nfs%:/*}
 			;;
 		BOOTIF=*)
-			export MAC="$( echo "$opts" | cut -b 11- | tr '-' ':' | tr '[a-z]' '[A-Z]' )" ;;
+			export MAC="$( echo "$opts" | cut -b 11- | tr '-' ':' | tr '[A-Z]' '[a-z]' )" ;; # make mac lowercase for udev (see setup_network)
 	esac
 done
 
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