diff --git a/octavia_tempest_plugin/common/constants.py b/octavia_tempest_plugin/common/constants.py
index 16d6cdf..ee4c16a 100644
--- a/octavia_tempest_plugin/common/constants.py
+++ b/octavia_tempest_plugin/common/constants.py
@@ -124,6 +124,7 @@
 # Protocols
 HTTP = 'HTTP'
 HTTPS = 'HTTPS'
+PROXY = 'PROXY'
 TCP = 'TCP'
 TERMINATED_HTTPS = 'TERMINATED_HTTPS'
 UDP = 'UDP'
diff --git a/octavia_tempest_plugin/common/requests_adapters.py b/octavia_tempest_plugin/common/requests_adapters.py
new file mode 100644
index 0000000..e37fab3
--- /dev/null
+++ b/octavia_tempest_plugin/common/requests_adapters.py
@@ -0,0 +1,32 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+import socket
+
+from requests.adapters import HTTPAdapter
+from requests.packages.urllib3.connection import HTTPConnection
+from requests.packages.urllib3.poolmanager import PoolManager
+
+
+class SourcePortAdapter(HTTPAdapter):
+    """"Transport adapter" that allows us to set the source port."""
+    def __init__(self, port, *args, **kwargs):
+        self._source_port = port
+        super(SourcePortAdapter, self).__init__(*args, **kwargs)
+
+    def init_poolmanager(self, connections, maxsize, block=False):
+        # Make sure TIMED_WAIT doesn't stop us from reusing the socket
+        sock_options = HTTPConnection.default_socket_options + [
+            (socket.SOL_SOCKET, socket.SO_REUSEADDR, 1), ]
+        self.poolmanager = PoolManager(
+            num_pools=connections, maxsize=maxsize,
+            block=block, source_address=('', self._source_port),
+            socket_options=sock_options)