dhcp: remove dhclient-script bash dependency

Take the dash compatible IPv6 link-local address test from the Debian
version of dhclient-script.

Note that although "echo -e" in the OE version of dhclient-script is
technically bash specific too, it is supported by Busybox echo when
Busybox is configured with CONFIG_FEATURE_FANCY_ECHO enabled (which
is the default in the OE Busybox defconfig) therefore leave as-is.

(From OE-Core rev: acd7b33d136fac52e1da7ce1bb3edd2a938b1b6f)

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-connectivity/dhcp/dhcp.inc

@@ -95,7 +95,6 @@ FILES_${PN}-server-config = "${sysconfdir}/default/dhcp-server ${sysconfdir}/dhc
 FILES_${PN}-relay = "${sbindir}/dhcrelay ${sysconfdir}/init.d/dhcp-relay ${sysconfdir}/default/dhcp-relay"
 
 FILES_${PN}-client = "${base_sbindir}/dhclient ${base_sbindir}/dhclient-script ${sysconfdir}/dhcp/dhclient.conf"
-RDEPENDS_${PN}-client = "bash"
 
 FILES_${PN}-omshell = "${bindir}/omshell"
 

meta/recipes-connectivity/dhcp/dhcp/remove-dhclient-script-bash-dependency.patch

@@ -0,0 +1,55 @@
+From 8aed2a9ff09cb0d584ad0a7340fe3a596879d9b1 Mon Sep 17 00:00:00 2001
+From: Andre McCurdy <armccurdy@gmail.com>
+Date: Thu, 21 Jul 2016 19:07:02 -0700
+Subject: [PATCH] remove dhclient-script bash dependency
+
+Take the dash compatible IPv6 link-local address test from the Debian
+version of dhclient-script.
+
+Note that although "echo -e" in the OE version of dhclient-script is
+technically bash specific too, it is supported by Busybox echo when
+Busybox is configured with CONFIG_FEATURE_FANCY_ECHO enabled (which
+is the default in the OE Busybox defconfig) therefore leave as-is.
+
+Upstream-Status: Inappropriate [OE specific]
+
+Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
+---
+ client/scripts/linux | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/client/scripts/linux b/client/scripts/linux
+index 232a0aa..1383f46 100755
+--- a/client/scripts/linux
++++ b/client/scripts/linux
+@@ -1,4 +1,4 @@
+-#!/bin/bash
++#!/bin/sh
+ # dhclient-script for Linux. Dan Halbert, March, 1997.
+ # Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
+ # No guarantees about this. I'm a novice at the details of Linux
+@@ -47,11 +47,11 @@ make_resolv_conf() {
+     if [ "x${new_dhcp6_domain_search}" != x ] ; then
+       resolv_conf="search ${new_dhcp6_domain_search}\n"
+     fi
+-    shopt -s nocasematch 
+     for nameserver in ${new_dhcp6_name_servers} ; do
+       # If the nameserver has a link-local address
+       # add a <zone_id> (interface name) to it.
+-      if  [[ "$nameserver" =~ ^fe80:: ]]
++      if [ "${nameserver##fe80::}" != "$nameserver" ] ||
++         [ "${nameserver##FE80::}" != "$nameserver" ]
+       then
+ 	zone_id="%$interface"
+       else
+@@ -59,7 +59,6 @@ make_resolv_conf() {
+       fi
+       resolv_conf="${resolv_conf}nameserver ${nameserver}$zone_id\n"
+     done
+-    shopt -u nocasematch 
+ 
+     echo -e "${resolv_conf}" > /etc/resolv.conf
+   fi
+-- 
+1.9.1
+

meta/recipes-connectivity/dhcp/dhcp_4.3.4.bb

@@ -8,6 +8,7 @@ SRC_URI += "file://dhcp-3.0.3-dhclient-dbus.patch;striplevel=0 \
             file://0001-site.h-enable-gentle-shutdown.patch \
             file://libxml2-configure-argument.patch \
             file://tweak-to-support-external-bind.patch \
+            file://remove-dhclient-script-bash-dependency.patch \
            "
 
 SRC_URI[md5sum] = "0138319fe2b788cf4bdf34fbeaf9ff54"