diff --git a/guest/fs-root/usr/bin/mosh-server.sh b/guest/fs-root/usr/bin/mosh-server.sh
new file mode 100755
index 0000000..a48a587
--- /dev/null
+++ b/guest/fs-root/usr/bin/mosh-server.sh
@@ -0,0 +1,17 @@
+#! /bin/bash
+
+# Will be renamed to mosh-server
+
+[[ $1 != "new" ]] && exec -a mosh-server /usr/bin/mosh-server.orig "$@"
+
+shift 1
+
+ip=$(ip addr show eth0)
+ip=${ip##*inet }
+ip=${ip%%/*}
+y=${ip##*.}
+x=${ip%.*}
+x=${x##*.}
+
+exec -a mosh-server /usr/bin/mosh-server.orig new -p $((25000 + x*256 + y)) "$@"
+