Patch to qemu-ifup for uefi pxe testing with BCPC

qemu-ifup.patch

--- /etc/qemu-ifup      2015-10-23 09:03:57.000000000 +0000
+++ /usr/local/share/qemu/qemu-ifup     2015-11-12 19:35:15.293392567 +0000
@@ -3,6 +3,8 @@
 # The idea is to add the tap device to the same bridge
 # as we have default routing to.

+exec 2>>/var/log/qemu.log
+set -x
 # in order to be able to find brctl
 PATH=$PATH:/sbin:/usr/sbin
 ip=$(which ip)
@@ -18,8 +20,9 @@
    ifconfig "$1" 0.0.0.0 up
 fi

-switch=$(ip route ls | \
-    awk '/^default / {
+dhcp_server=10.0.100.3
+switch=$(ip route get $dhcp_server | \
+    awk '{
           for(i=0;i<NF;i++) { if ($i == "dev") { print $(i+1); next; } }
          }'
         )