From 1411bb94e34929dadc656db034d23add5e697390 Mon Sep 17 00:00:00 2001
From: Taoyu Li <taoyl@microsoft.com>
Date: Wed, 1 Feb 2017 03:06:43 +0000
Subject: [PATCH] Add DHCP hook to set static hostname after getting from DHCP

---
 build_debian.sh     | 3 ++-
 files/dhcp/hostname | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)
 create mode 100644 files/dhcp/hostname

diff --git a/build_debian.sh b/build_debian.sh
index 11d8217ff8bf..88e60e4e648a 100755
--- a/build_debian.sh
+++ b/build_debian.sh
@@ -239,7 +239,8 @@ allow-hotplug eth0
 iface eth0 inet dhcp
 EOF
 
-sudo cp files/dhcp/rfc3442-classless-routes $FILESYSTEM_ROOT/etc/dhcp/dhclient-exit-hooks.d
+sudo cp files/dhcp/hostname $FILESYSTEM_ROOT/etc/dhcp/dhclient-exit-hooks.d/
+sudo cp files/dhcp/rfc3442-classless-routes $FILESYSTEM_ROOT/etc/dhcp/dhclient-exit-hooks.d/
 
 if [ -f sonic_debian_extension.sh ]; then
     ./sonic_debian_extension.sh $FILESYSTEM_ROOT
diff --git a/files/dhcp/hostname b/files/dhcp/hostname
new file mode 100644
index 000000000000..b8e924e4ceec
--- /dev/null
+++ b/files/dhcp/hostname
@@ -0,0 +1,6 @@
+case $reason in
+        BOUND|RENEW|REBIND|REBOOT)
+                current_hostname=`hostname`
+                echo $current_hostname > /etc/hostname
+                ;;
+esac