dhcp: update to 4.3.6P1, add patch iproute2

srcpkgs/dhcp/patches/0002-iproute2.patch

@@ -0,0 +1,13 @@
+diff --git a/client/scripts/linux b/client/scripts/linux
+index 5fb16121..c4cef632 100755
+--- client/scripts/linux
++++ client/scripts/linux
+@@ -362,7 +362,7 @@ case "$reason" in
+         interface_up_wait_time=5
+         for i in $(seq 0 ${interface_up_wait_time})
+         do
+-            ifconfig ${interface} | grep RUNNING >/dev/null 2>&1
++            ${ip} link show dev ${interface} | grep -q LOWER_UP 2>&1
+             if [ $? -eq 0 ]; then
+                 break;
+             fi

srcpkgs/dhcp/template

@@ -1,7 +1,8 @@
 # Template file for 'dhcp'
 pkgname=dhcp
-version=4.3.6
+version=4.3.6P1
 revision=1
+wrksrc="dhcp-${version/P/-P}"
 build_style=gnu-configure
 disable_parallel_build=yes
 hostmakedepends="perl"
@@ -10,8 +11,8 @@ short_desc="Server from the Internet Software Consortium's implementation of DHC
 maintainer="Enno Boland <gottox@voidlinux.eu>"
 license="ISC"
 homepage="https://www.isc.org/software/dhcp"
-distfiles="http://ftp.isc.org/isc/dhcp/${version}/dhcp-${version}.tar.gz"
-checksum=a41eaf6364f1377fe065d35671d9cf82bbbc8f21207819b2b9f33f652aec6f1b
+distfiles="http://ftp.isc.org/isc/dhcp/${version/P/-P}/dhcp-${version/P/-P}.tar.gz"
+checksum=2fd177bef02856f05fe17713ced9bfcc7d94f14c933c15f2f2fbedc9cc57a3c3
 
 pre_configure() {
 	local _args=" --sbindir=/usr/bin --enable-paranoia