Add script for getting qemu ip

virt/get_ip.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+set -e
+
+cd $(dirname $0)
+
+WORKDIR=$(realpath work)
+
+Q2=$WORKDIR/qemu_mon
+MIN=$Q2.in
+MOUT=$Q2.out
+
+LINE=""
+
+function flushPipe() {
+    # Ensure there is no lingering output in the pipe
+    # by flushing it in a slightly hacky way.
+    # dd complains about resource not being available....
+    # dd: error reading 'work/qemu_mon.out': Resource temporarily unavailable
+    # ...but it doesn't matter.
+    (dd if=$MOUT iflag=nonblock of=/dev/null || true) >/dev/null 2>&1
+}
+
+flushPipe
+
+echo 'info network' > $MIN
+
+# Reading twice cause first line is echoed command.
+read LINE < $MOUT
+read LINE < $MOUT
+
+flushPipe
+
+MAC=$(echo $LINE | cut -d "," -f4 | cut -d "=" -f2)
+
+echo $MAC