+# try to choose close ubuntu mirror which support rsync protocol
+# https://bugs.launchpad.net/fuel/+bug/1459252
+MIRROR_URLS := $(shell curl -s http://mirrors.ubuntu.com/mirrors.txt)
+MIRROR_HOSTS := $(shell for url in ${MIRROR_URLS}; do echo $$url | cut -d'/' -f3; done)
+RSYNC_HOST := $(shell for host in ${MIRROR_HOSTS}; do echo > /dev/tcp/$${host}/873 && echo $$host && break; done)
+