Comment 56 for bug 1953165

diff --git a/neutron/agent/metadata/driver.py b/neutron/agent/metadata/driver.py
index 0b23879354..bbc5569e29 100644
--- a/neutron/agent/metadata/driver.py
+++ b/neutron/agent/metadata/driver.py
@@ -144,7 +144,7 @@ class HaproxyConfigurator(object):
         }
         if self.host_v6 and self.bind_interface:
             cfg_info['bind_v6_line'] = (
- 'bind %s:%s interface %s' % (
+ 'bind %s:%s interface %s transparent' % (
                     self.host_v6, self.port, self.bind_interface)
             )
         # If using the network ID, delete any spurious router ID that might