Use dhcpd6.conf for DHCP IPv6 and dhpcd.conf for DHCP IPv4.

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

include several CVE fixes.
CVE: CVE-2018-5733
CVE: CVE-2018-5732

LIC_CHKSUM_FILE updated to SPFX format

https://kb.isc.org/article/AA-01571

remove several patches now included in update.
Shared libarary support is now enabled in configure+lt, use it
and revert to autotools-brokensep
Refresh patches

Aligns support with bind 9.11.x

Add libxml2 support to configure.ac+lt

Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Fix CVE-2017-3144

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-3144
https://kb.isc.org/article/AA-01541

Patch from:
https://source.isc.org/cgi-bin/gitweb.cgi?p=dhcp.git;a=commitdiff;h=5097bc0559f592683faac1f67bf350e1bddf6ed4

Signed-off-by: Yue Tao <Yue.Tao@windriver.com>
Signed-off-by: Mingli Yu <Mingli.Yu@windriver.com>
Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

Signed-off-by: Ross Burton <ross.burton@intel.com>

A missing case breaks the build when libxml2 is
required and found appropriately. The third argument
to the function AC_SEARCH_LIB is action-if-found which
was mistakenly been used for the case where the library
is not found and hence breaks the configure phase
where it shoud actually pass.
We now pass on silently when action-if-found is
executed.

Signed-off-by: Awais Belal <awais_belal@mentor.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

${PN} will include additional prefixes, such as lib32-, which are not
actually a part of the user that is being added. This was creating an unused
user and possibly missing the actually intended user. By using ${BPN} this
will remove all additional extra information and consistently be "dhcp".

Signed-off-by: Dan Dedrick <ddedrick@lexmark.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

1. Rebase patches to 4.3.6
- define-macro-_PATH_DHCPD_CONF-and-_PATH_DHCLIENT_CON.patch -> 0001
- dhcp-3.0.3-dhclient-dbus.patch -> 0002
- link-with-lcrypto.patch -> 0003
- fixsepbuild.patch -> 0004
- dhclient-script-drop-resolv.conf.dhclient.patch -> 0005
- 0001-site.h-enable-gentle-shutdown.patch -> 0006
- libxml2-configure-argument.patch -> 0007
- tweak-to-support-external-bind.patch -> 0008
- remove-dhclient-script-bash-dependency.patch -> 0009
- build-shared-libs.patch -> 0010
- Moved-the-call-to-isc_app_ctxstart-to-not-get-signal.patch -> 0011

2. Drop search-for-libxml2.patch
   It is overrided by libxml2-configure-argument.patch

3. Rework dhclient-script-drop-resolv.conf.dhclient.patch and
Drop replace-ifconfig-route.patch.
vim client/scripts/linux
...
Script refresh in 2017. The aliasing code was too convoluted and needs
to go away. Migrated DHCPv4 script to ip command from iproute2 suite.
This is based on Debian script with some tweaks. ifconfig is no longer
used. Everything is done using ip tool from ip-route2.
...

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Add dhclient.service. This service file mainly comes from meta-systemd,
with modifications to take nfs boot into consideration.

While using eth0 as the nfsboot interface, we'd like dhclient service
to skip it like what ifup and connman do in sysvinit.

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

In https://source.isc.org/git/bind9.git, since the following
commit applied:
...
commit b99bfa184bc9375421b5df915eea7dfac6a68a99
Author: Evan Hunt <each@isc.org>
Date:   Wed Apr 10 13:49:57 2013 -0700

    [master] unify internal and export libraries

    3550.       [func]          Unified the internal and export versions of the
                        BIND libraries, allowing external clients to use
                        the same libraries as BIND. [RT #33131]
...
(git show b99bfa184bc9375421b5df915eea7dfac6a68a99 -- ./lib/isc/unix/app.c)

In this commit, if bind9 enable threads(ISC_PLATFORM_USETHREADS),
it blocks signal SIGHUP, SIGINT and SIGTERM in isc__app_ctxstart.
Which caused dhclient/dhcpd could not be stopped by SIGTERM.

It caused systemd's reboot hung which send SIGTERM by default.

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

Signed-off-by: Ross Burton <ross.burton@intel.com>