diff --git a/fetch_packages.py b/fetch_packages.py
index 2c77721..3d2e676 100644
--- a/fetch_packages.py
+++ b/fetch_packages.py
@@ -105,7 +105,7 @@ def ApplyPatches(pkg):
 #def VarSubst(cmdstr, filename):
 #    return re.sub(r'\${filename}', filename, cmdstr)
 
-def DownloadPackage(url, pkg, md5):
+def DownloadPackage(urls, pkg, md5):
     #Check if the package already exists
     if os.path.isfile(pkg):
         md5sum = FindMd5sum(pkg)
@@ -115,22 +115,29 @@ def DownloadPackage(url, pkg, md5):
             os.remove(pkg)
 
     retry_count = 0
-    while True:
-	subprocess.call([wgettool, '--no-check-certificate', '-O', pkg, url, '--timeout=10'])
-        md5sum = FindMd5sum(pkg)
-        if ARGS['verbose']:
-            print "Calculated md5sum: %s" % md5sum
-            print "Expected md5sum: %s" % md5
-        if md5sum == md5:
-            return
-        elif retry_count <= _RETRIES:
+    while retry_count <= _RETRIES:
+        for url in urls:
+            # poor man's templating
+            url = url.text
+            if "{{ site_mirror }}" in url:
+                if not ARGS['site_mirror']:
+                    continue
+                url = url.replace("{{ site_mirror }}", ARGS['site_mirror'])
+            subprocess.call([wgettool, '--no-check-certificate', '-O', pkg, url, '--timeout=10'])
+            md5sum = FindMd5sum(pkg)
+            if ARGS['verbose']:
+                print "Calculated md5sum: %s" % md5sum
+                print "Expected md5sum: %s" % md5
+            if md5sum == md5:
+                return
             os.remove(pkg)
-            retry_count += 1
-            sleep(1)
-            continue
-        else:
-            raise RuntimeError("MD5sum %s, expected(%s) dosen't match for the "
-                               "downloaded package %s" % (md5sum, md5, pkg))
+        retry_count += 1
+        # back-off retry timer - worst case scenario we wait for 150 seconds
+        sleep(10 * retry_count)
+
+    # We couldn't download the package, return the last md5sum
+    raise RuntimeError("MD5sum %s, expected(%s) dosen't match for the "
+                       "downloaded package %s" % (md5sum, md5, pkg))
 
 
 def ReconfigurePackageSources(path):
@@ -193,11 +200,13 @@ def ProcessPackage(pkg):
         return
 
     print "Processing %s ..." % (pkg['name'])
-    url = str(pkg['url'])
-    filename = getFilename(pkg, url)
+    urls = list(pkg['urls'].iterchildren())
+    filename = getFilename(pkg, urls[0].text)
     ccfile = ARGS['cache_dir'] + '/' + filename
-    DownloadPackage(url, ccfile, pkg.md5)
+    DownloadPackage(urls, ccfile, pkg.md5)
+
     cmd1=None
+
     #
     # Determine the name of the directory created by the package.
     # unpack-directory means that we 'cd' to the given directory before
@@ -343,6 +352,7 @@ def parse_args():
     parser.add_argument("--node-module-tmp-dir", default=ARGS['node_modules_tmp_dir'])
     parser.add_argument("--verbose", default=ARGS['verbose'], action='store_true')
     parser.add_argument("--dry-run", default=ARGS['dry_run'], action='store_true')
+    parser.add_argument("--site-mirror", dest="site_mirror", required=False, default=None)
     ARGS = vars(parser.parse_args())
 
 
diff --git a/packages.xml b/packages.xml
index 4979e17..7e12466 100644
--- a/packages.xml
+++ b/packages.xml
@@ -16,7 +16,10 @@
   -->
   <package>
     <name>Boost C++ libraries version 1.48</name>
-    <url>http://sourceforge.net/projects/boost/files/boost/1.48.0/boost_1_48_0.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/b/boost_1_48_0.tar.gz</url>
+      <url canonical="true">http://sourceforge.net/projects/boost/files/boost/1.48.0/boost_1_48_0.tar.gz</url>
+    </urls>
     <format>tgz</format>
     <md5>313a11e97eb56eb7efd18325354631be</md5>
     <patches>
@@ -55,7 +58,10 @@
   </package>
   <package>
     <name>curl 7.24</name>
-    <url>http://curl.haxx.se/download/curl-7.24.0.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/c/curl-7.24.0.tar.gz</url>
+      <url canonical="true">http://curl.haxx.se/download/curl-7.24.0.tar.gz</url>
+    </urls>
     <format>tgz</format>
     <md5>b93420f80a2baaa61a0f45214eddc2ba</md5>
     <patches>
@@ -88,7 +94,10 @@
   </package>
   <package>
     <name>Google C++ Testing Framework 1.6.0</name>
-    <url>https://github.com/Juniper/contrail-third-party-cache/raw/master/googlecode/googletest-release-1.6.0.zip</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/g/googletest-release-1.6.0.zip</url>
+      <url canonical="true">https://github.com/Juniper/contrail-third-party-cache/raw/master/googlecode/googletest-release-1.6.0.zip</url>
+    </urls>
     <rename>gtest-1.6.0</rename>
     <patches>
       <patch strip="2">gtest-1.6.0_patch1.diff</patch>
@@ -114,7 +123,10 @@
   </package>
   <package>
     <name>Google C++ Mocking Framework 1.6.0</name>
-    <url>https://github.com/Juniper/contrail-third-party-cache/raw/master/googlecode/googlemock-release-1.6.0.zip</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/g/googlemock-release-1.6.0.zip</url>
+      <url canonical="true">https://github.com/Juniper/contrail-third-party-cache/raw/master/googlecode/googlemock-release-1.6.0.zip</url>
+    </urls>
     <format>zip</format>
     <rename>gmock-1.6.0</rename>
     <md5>b51cc3e69a8ef16ac54cee9889b79646</md5>
@@ -137,7 +149,10 @@
   </package>
   <package>
     <name>Google perftools</name>
-    <url>https://github.com/Juniper/contrail-third-party-cache/raw/master/googlecode/gperftools-2.1.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/g/gperftools-2.1.tar.gz</url>
+      <url canonical="true">https://github.com/Juniper/contrail-third-party-cache/raw/master/googlecode/gperftools-2.1.tar.gz</url>
+    </urls>
     <format>tgz</format>
     <md5>5e5a981caf9baa9b4afe90a82dcf9882</md5>
     <platform>
@@ -159,7 +174,10 @@
   </package>
   <package>
     <name>Minimalistic C client for Redis v0.11</name>
-    <url>https://github.com/Juniper/contrail-third-party-cache/raw/master/hiredis/hiredis-0.11.0.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/h/hiredis-v0.11.0.tar.gz</url>
+      <url canonical="true">https://github.com/Juniper/contrail-third-party-cache/raw/master/hiredis/hiredis-0.11.0.tar.gz</url>
+    </urls>
     <local-filename>hiredis-v0.11.0.tar.gz</local-filename>
     <format>tgz</format>
     <md5>e2ac29509823ccc96990b6fe765b5d46</md5>
@@ -169,7 +187,10 @@
   </package>
   <package>
     <name>Log4Cplus 1.1.1</name>
-    <url>http://downloads.sourceforge.net/project/log4cplus/log4cplus-stable/1.1.1/log4cplus-1.1.1.tar.bz2</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/l/log4cplus-1.1.1.tar.bz2</url>
+      <url canonical="true">http://downloads.sourceforge.net/project/log4cplus/log4cplus-stable/1.1.1/log4cplus-1.1.1.tar.bz2</url>
+    </urls>
     <format>tbz</format>
     <md5>a6fbba1e4b021f301b98c7bc68a068cb</md5>
     <patches>
@@ -194,7 +215,10 @@
   </package>
   <package>
     <name>Thread Building Blocks 4.0 Update 2</name>
-    <url>http://www.threadingbuildingblocks.org/sites/default/files/software_releases/source/tbb40_20111130oss_src.tgz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/t/tbb40_20111130oss_src.tgz</url>
+      <url canonical="true">http://www.threadingbuildingblocks.org/sites/default/files/software_releases/source/tbb40_20111130oss_src.tgz</url>
+    </urls>
     <format>tgz</format>
     <md5>1e6926b21e865e79772119cd44fc3ad8</md5>
     <patches>
@@ -223,14 +247,20 @@
   </package>
   <package>
     <name>Pugi XML 1.2</name>
-    <url>https://github.com/zeux/pugixml/releases/download/v1.2/pugixml-1.2.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/p/pugixml-1.2.tar.gz</url>
+      <url canonical="true">https://github.com/zeux/pugixml/releases/download/v1.2/pugixml-1.2.tar.gz</url>
+    </urls>
     <unpack-directory>pugixml</unpack-directory>
     <format>tgz</format>
     <md5>477f4a7d75af0383f52ee6622b3f6035</md5>
   </package>
   <package>
     <name>Apache Thrift 0.8</name>
-    <url>http://archive.apache.org/dist/thrift/0.8.0/thrift-0.8.0.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/t/thrift-0.8.0.tar.gz</url>
+      <url canonical="true">http://archive.apache.org/dist/thrift/0.8.0/thrift-0.8.0.tar.gz</url>
+    </urls>
     <patches>
       <patch strip="2">thrift_patch1.diff</patch>
       <patch strip="2">thrift_autoconf.patch</patch>
@@ -241,7 +271,10 @@
   </package>
   <package>
     <name>hiredis boostasio-adapter</name>
-    <url>https://github.com/Juniper/contrail-third-party-cache/raw/master/hiredis/hiredis-boostasio-adapter-master.zip</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/h/hiredis-boostasio-adapter-master.zip</url>
+      <url canonical="true">https://github.com/Juniper/contrail-third-party-cache/raw/master/hiredis/hiredis-boostasio-adapter-master.zip</url>
+    </urls>
     <local-filename>hiredis-master.zip</local-filename>
     <format>zip</format>
     <md5>c3ba292cb8a6d84da3aae774a33d4356</md5>
@@ -252,14 +285,20 @@
   </package>
   <package>
     <name>Joyent HTTP parser</name>
-    <url>https://github.com/joyent/http-parser/archive/v2.1.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/h/http-parser-v2.1.tar.gz</url>
+      <url canonical="true">https://github.com/joyent/http-parser/archive/v2.1.tar.gz</url>
+    </urls>
     <local-filename>http-parser-v2.1.tar.gz</local-filename>
     <format>tgz</format>
     <md5>93d89867996b8077e0140692c55e997c</md5>
   </package>
   <package>
     <name>Simple AMQP Client</name>
-    <url>https://github.com/alanxz/SimpleAmqpClient/archive/v2.4.0.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/S/SimpleAmqpClient-2.4.0.tar.gz</url>
+      <url canonical="true">https://github.com/alanxz/SimpleAmqpClient/archive/v2.4.0.tar.gz</url>
+    </urls>
     <local-filename>SimpleAmqpClient-2.4.0.tar.gz</local-filename>
     <format>tgz</format>
     <rename>SimpleAmqpClient</rename>
@@ -267,7 +306,10 @@
   </package>
   <package>
     <name>RabbitMQ C</name>
-    <url>https://github.com/alanxz/rabbitmq-c/releases/download/v0.8.0/rabbitmq-c-0.8.0.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/r/rabbitmq-c-0.8.0.tar.gz</url>
+      <url canonical="true">https://github.com/alanxz/rabbitmq-c/releases/download/v0.8.0/rabbitmq-c-0.8.0.tar.gz</url>
+    </urls>
     <local-filename>rabbitmq-c-0.8.0.tar.gz</local-filename>
     <rename>rabbitmq-c</rename>
     <format>tgz</format>
@@ -278,7 +320,10 @@
   </package>
   <package>
     <name>Bottle Python Web Framework</name>
-    <url>https://pypi.python.org/packages/source/b/bottle/bottle-0.11.6.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/b/bottle-0.11.6.tar.gz</url>
+      <url canonical="true">https://pypi.python.org/packages/source/b/bottle/bottle-0.11.6.tar.gz</url>
+    </urls>
     <format>tgz</format>
     <md5>0bafdc4e13ea2b1a3bddf36b5af108c4</md5>
     <patches>
@@ -299,13 +344,19 @@
   </package>
   <package>
     <name>pYthOn Finite State Machine</name>
-    <url>https://pypi.python.org/packages/source/f/fysom/fysom-1.0.8.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/f/fysom-1.0.8.tar.gz</url>
+      <url canonical="true">https://pypi.python.org/packages/source/f/fysom/fysom-1.0.8.tar.gz</url>
+    </urls>
     <format>tgz</format>
     <md5>5c8532ebdbc151eb01531ab2c7404297</md5>
   </package>
   <package>
     <name>Gnome XML C parser and toolkit</name>
-    <url>http://xmlsoft.org/sources/libxml2-2.8.0.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/l/libxml2-2.8.0.tar.gz</url>
+      <url canonical="true">http://xmlsoft.org/sources/libxml2-2.8.0.tar.gz</url>
+    </urls>
     <format>tgz</format>
     <md5>c62106f02ee00b6437f0fb9d370c1093</md5>
     <platform>
@@ -335,13 +386,19 @@
   </package>
   <package>
     <name>JSON parser/generator for C++</name>
-    <url>https://github.com/Juniper/contrail-third-party-cache/raw/master/googlecode/rapidjson-v1.1.0.zip</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/r/rapidjson-v1.1.0.zip</url>
+      <url canonical="true">https://github.com/Juniper/contrail-third-party-cache/raw/master/googlecode/rapidjson-v1.1.0.zip</url>
+    </urls>
     <format>zip</format>
     <md5>4f82cc9f41b7d39afeeec10ff8b581b9</md5>
   </package>
   <package>
     <name>ISC Bind</name>
-    <url>http://www.mirrorservice.org/sites/ftp.isc.org/isc/bind9/9.10.4-P2/bind-9.10.4-P2.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/b/bind-9.10.4-P2.tar.gz</url>
+      <url canonical="true">http://www.mirrorservice.org/sites/ftp.isc.org/isc/bind9/9.10.4-P2/bind-9.10.4-P2.tar.gz</url>
+    </urls>
     <format>tgz</format>
     <md5>50163d229020c48929c84bec5b0068d7</md5>
     <patches>
@@ -351,7 +408,10 @@
   </package>
   <package>
     <name>ICU - International Components for Unicode</name>
-    <url>http://download.icu-project.org/files/icu4c/52.1/icu4c-52_1-src.tgz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/i/icu4c-52_1-src.tgz</url>
+      <url canonical="true">http://download.icu-project.org/files/icu4c/52.1/icu4c-52_1-src.tgz</url>
+    </urls>
     <format>tgz</format>
     <md5>9e96ed4c1d99c0d14ac03c140f9f346c</md5>
     <platform>
@@ -381,7 +441,10 @@
   </package>
   <package>
     <name>vijava</name>
-    <url>https://github.com/Juniper/contrail-third-party-cache/raw/master/vmware/vijava55b20130927src.jar</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/v/vijava55b20130927src.jar</url>
+      <url canonical="true">https://github.com/Juniper/contrail-third-party-cache/raw/master/vmware/vijava55b20130927src.jar</url>
+    </urls>
     <local-filename>vijava55b20130927src.jar</local-filename>
     <format>zip</format>
     <md5>3993c5bf9323e55fe9e6c14c974ea155</md5>
@@ -392,7 +455,10 @@
   </package>
   <package>
     <name>Open vSwitch version 2.3.0</name>
-    <url>http://openvswitch.org/releases/openvswitch-2.3.0.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/o/openvswitch-2.3.0.tar.gz</url>
+      <url canonical="true">http://openvswitch.org/releases/openvswitch-2.3.0.tar.gz</url>
+    </urls>
     <local-filename>openvswitch-2.3.0.tar.gz</local-filename>
     <format>tgz</format>
     <md5>9c4d1471a56718132e0157af1bfc9310</md5>
@@ -402,14 +468,20 @@
   </package>
   <package>
     <name>Go 1.8</name>
-    <url>https://storage.googleapis.com/golang/go1.8.linux-amd64.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/g/go1.8.linux-amd64.tar.gz</url>
+      <url canonical="true">https://storage.googleapis.com/golang/go1.8.linux-amd64.tar.gz</url>
+    </urls>
     <local-filename>go1.8.linux-amd64.tar.gz</local-filename>
     <format>tgz</format>
     <md5>d0f6de92ccef6489a0d9b8efbb8f577f</md5>
   </package>
   <package>
     <name>Cni Go Deps</name>
-    <url>https://github.com/Juniper/contrail-third-party-cache/raw/master/cni/cni_go_deps.tar.gz</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/c/cni_go_deps.tar.gz</url>
+      <url canonical="true">https://github.com/Juniper/contrail-third-party-cache/raw/master/cni/cni_go_deps.tar.gz</url>
+    </urls>
     <format>tgz</format>
     <md5>823fcd824557fa0b6506e29d7591f76d</md5>
   </package>
diff --git a/populate_cache.py b/populate_cache.py
new file mode 100644
index 0000000..4584371
--- /dev/null
+++ b/populate_cache.py
@@ -0,0 +1,110 @@
+#!/usr/bin/env python
+#
+# This script creates a local mirror for third-party packages used
+# in Contrail builds.
+#
+# Usage: populate_cache.py target_directory/
+
+import logging
+import argparse
+import os
+import hashlib
+import shutil
+import sys
+import urllib2
+
+from urlparse import urlparse
+from lxml import objectify
+
+LOG = logging.getLogger("populate_cache")
+LOG.setLevel(logging.DEBUG)
+
+ch = logging.StreamHandler()
+ch.setLevel(logging.DEBUG)
+
+LOG.addHandler(ch)
+
+def parse_packages_xml(path):
+    return objectify.parse(path)
+
+def get_package_list(xml):
+    root = xml.getroot()
+    return root.findall("package")
+
+def get_package_details(element):
+    md5sum = element['md5']
+    canonical_url = element['urls'].findall("url[@canonical='true']")
+    assert len(canonical_url) == 1
+
+    try:
+        filename = element['local-filename'].text
+    except AttributeError:
+        parsed_url = urlparse(canonical_url[0].text)
+        filename = os.path.basename(parsed_url.path)
+
+    return (canonical_url[0].text, filename, md5sum)
+
+def cached_file_exists(dest, filename, md5sum):
+    parent_dir = os.path.join(dest, filename[0])
+    local_path = os.path.join(parent_dir, filename)
+
+    if not os.path.exists(local_path):
+        LOG.info("File %s missing, will download", filename)
+        return False
+
+    with open(local_path, 'rb') as fh:
+        calculated_md5 = hashlib.md5(fh.read()).hexdigest()
+        if calculated_md5 != md5sum:
+            LOG.warn("File %s found, but checksum mismatch "
+                     "(found: '%s' expected: '%s')",
+                     filename, calculated_md5, md5sum)
+            return False
+
+    LOG.info("File %s found, checksum matches", filename)
+    return True
+
+def download_package(canonical_url, dest, filename, md5sum):
+    parent_dir = os.path.join(dest, filename[0])
+    local_path = os.path.join(parent_dir, filename)
+    temp_path = local_path + '.tmp'
+
+    if not os.path.exists(parent_dir):
+        os.makedirs(parent_dir)
+
+    chunk = 16 * 1024
+    req = urllib2.urlopen(canonical_url)
+    with open(temp_path, 'wb') as fh:
+        shutil.copyfileobj(req, fh, chunk)
+
+    with open(temp_path, 'rb') as fh:
+        calculated_md5 = hashlib.md5(fh.read()).hexdigest()
+        if calculated_md5 != md5sum:
+            LOG.error("File %s checksum error"
+                     "(found: '%s' expected: '%s')",
+                     filename, calculated_md5, md5sum)
+            return False
+
+    LOG.info("File %s downloaded, checksum matches", filename)
+
+    if os.path.exists(local_path):
+        os.unlink(local_path)
+    os.rename(temp_path, local_path)
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("destination", nargs=1)
+    args = parser.parse_args(sys.argv[1:])
+
+    dest = args.destination[0]
+
+    xml = parse_packages_xml("packages.xml")
+    packages = get_package_list(xml)
+    for package in packages:
+        canonical_url, filename, md5sum = get_package_details(package)
+        if cached_file_exists(dest, filename, md5sum):
+            continue
+        download_package(canonical_url, dest, filename, md5sum)
+
+if __name__ == "__main__":
+    main()
+
diff --git a/windows_packages.xml b/windows_packages.xml
index 74785b2..2384399 100755
--- a/windows_packages.xml
+++ b/windows_packages.xml
@@ -16,7 +16,10 @@
   -->
   <package>
     <name>Windows Apache Thrift 0.8</name>
-    <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/thrift-0.8.0.zip</url>
+    <urls>
+      <url>{{ site_mirror }}/contrail-third-party/t/thrift-0.8.0.zip</url>
+      <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/thrift-0.8.0.zip</url>
+    </urls>
       <patches>
           <patch strip="0">windows/thrift.patch</patch>
       </patches>
@@ -26,7 +29,10 @@
   </package>
   <package>
         <name>log4cplus-1.1.1</name>
-        <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/log4cplus-1.1.1.zip</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/l/log4cplus-1.1.1.zip</url>
+          <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/log4cplus-1.1.1.zip</url>
+        </urls>
       <destination>log4cplus-1.1.1</destination>
         <format>zip</format>
         <md5>1d6aab5aa81bfbe2edaa97995b808279</md5>
@@ -34,7 +40,10 @@
     
     <package>
         <name>googletest-release-1.8.0</name>
-        <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/googletest-release-1.8.0.zip</url>
+	<urls>
+	  <url>{{ site_mirror }}/contrail-third-party/g/googletest-release-1.8.0.zip</url>
+          <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/googletest-release-1.8.0.zip</url>
+        </urls>
         <destination>googletest-release-1.8.0</destination>
         <format>zip</format>
         <md5>adfafc8512ab65fd3cf7955ef0100ff5</md5>
@@ -42,7 +51,10 @@
 
     <package>
         <name>rapidjson-1.1.0</name>
-        <url>https://github.com/Juniper/contrail-third-party-cache/raw/master/googlecode/rapidjson-v1.1.0.zip</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/r/rapidjson-v1.1.0.zip</url>
+          <url canonical="true">https://github.com/Juniper/contrail-third-party-cache/raw/master/googlecode/rapidjson-v1.1.0.zip</url>
+        </urls>
         <destination>rapidjson</destination>
         <format>zip</format>
         <md5>4f82cc9f41b7d39afeeec10ff8b581b9</md5>
@@ -50,28 +62,40 @@
     
     <package>
         <name>boost 1.62.0</name>
-        <url>https://sourceforge.net/projects/boost/files/boost/1.62.0/boost_1_62_0.zip</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/b/boost_1_62_0.zip</url>
+          <url canonical="true">https://sourceforge.net/projects/boost/files/boost/1.62.0/boost_1_62_0.zip</url>
+        </urls>
         <destination>boost_1_62_0</destination>
         <format>zip</format>
         <md5>9495bfde25f46698edb8b8eb02e55eab</md5>
     </package>
     <package>
         <name>openvswitch-2.6.0</name>
-        <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/openvswitch-2.6.0.tar.gz</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/o/openvswitch-2.6.0.tar.gz</url>
+          <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/openvswitch-2.6.0.tar.gz</url>
+        </urls>
         <destination>openvswitch-2.6.0</destination>
         <format>tgz</format>
         <md5>7d73a3e48aa60a807663e690c3928d72</md5>
     </package>
     <package>
         <name>http-parser-2.1</name>
-        <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/http-parser-2.1.zip</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/h/http-parser-2.1.zip</url>
+          <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/http-parser-2.1.zip</url>
+        </urls>
         <destination>http-parser-2.1</destination>
         <format>zip</format>
         <md5>ebed8ebabaaeff86d75bd2a7bc6ee0ba</md5>
     </package>
     <package>
         <name>pugixml-1.2</name>
-        <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/pugixml-1.2.tar.gz</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/p/pugixml-1.2.tar.gz</url>
+          <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/pugixml-1.2.tar.gz</url>
+        </urls>
         <unpack-directory>pugixml</unpack-directory>
         <destination>pugixml</destination>
         <format>tgz</format>
@@ -79,7 +103,10 @@
     </package>
     <package>
         <name>curl-7.52.0</name>
-        <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/curl-curl-7_52_0.zip</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/c/curl-curl-7_52_0.zip</url>
+          <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/curl-curl-7_52_0.zip</url>
+        </urls>
         <destination>curl-curl-7_52_0</destination>
         <rename>curl-7.52.0</rename>
         <format>zip</format>
@@ -87,7 +114,10 @@
     </package>
     <package>
         <name>dirent-1.21</name>
-        <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/dirent-1.21.zip</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/d/dirent-1.21.zip</url>
+          <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/dirent-1.21.zip</url>
+        </urls>
         <unpack-directory>dirent</unpack-directory>
         <destination>dirent-1.21</destination>
         <format>zip</format>
@@ -95,14 +125,20 @@
     </package>
     <package>
         <name>openssl-1.0.2k</name>
-        <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/openssl-1.0.2k.tar.gz</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/o/openssl-1.0.2k.tar.gz</url>
+          <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/openssl-1.0.2k.tar.gz</url>
+        </urls>
         <destination>openssl-1.0.2k</destination>
         <format>tgz</format>
         <md5>f965fc0bf01bf882b31314b61391ae65</md5>
     </package>
     <package>
         <name>libevent-2.0.22</name>
-        <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/libevent-2.0.22.tar.gz</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/l/libevent-2.0.22.tar.gz</url>
+          <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/libevent-2.0.22.tar.gz</url>
+        </urls>
         <destination>libevent-2.0.22-stable</destination>
         <rename>libevent-2.0.22</rename>
         <format>tgz</format>
@@ -110,14 +146,20 @@
     </package>
     <package>
         <name>libxml2-2.9.4</name>
-        <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/libxml2-2.9.4.tar.gz</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/l/libxml2-2.9.4.tar.gz</url>
+          <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/libxml2-2.9.4.tar.gz</url>
+        </urls>
         <destination>libxml2</destination>
         <format>tgz</format>
         <md5>ae249165c173b1ff386ee8ad676815f5</md5>
     </package>
     <package>
         <name>tbb-2017_U7</name>
-        <url>https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/tbb-2017_U7.zip</url>
+	<urls>
+          <url>{{ site_mirror }}/contrail-third-party/t/tbb-2017_U7.zip</url>
+          <url canonical="true">https://github.com/sagarkchitnis/windows/raw/master/windows/thirdpartycache/tbb-2017_U7.zip</url>
+        </urls>
         <destination>tbb-2017_U7</destination>
         <format>zip</format>
         <md5>885d480693287a093d230460a067afb4</md5>