diff --git a/neutron/agent/linux/dhcp.py b/neutron/agent/linux/dhcp.py
index 313af050d64..51c590f4b0d 100644
--- a/neutron/agent/linux/dhcp.py
+++ b/neutron/agent/linux/dhcp.py
@@ -1569,7 +1569,7 @@ class DeviceManager(object):
         ipv4_rule = ('-p udp -m udp --dport %d -j CHECKSUM --checksum-fill'
                      % constants.DHCP_RESPONSE_PORT)
         ipv6_rule = ('-p udp -m udp --dport %d -j CHECKSUM --checksum-fill'
-                     % n_const.DHCPV6_CLIENT_PORT)
+                     % constants.DHCPV6_CLIENT_PORT)
         iptables_mgr.ipv4['mangle'].add_rule('POSTROUTING', ipv4_rule)
         iptables_mgr.ipv6['mangle'].add_rule('POSTROUTING', ipv6_rule)
         iptables_mgr.apply()
diff --git a/neutron/common/constants.py b/neutron/common/constants.py
index 8b2f0c8b986..3139ac5ee2e 100644
--- a/neutron/common/constants.py
+++ b/neutron/common/constants.py
@@ -187,9 +187,6 @@ IP_ALLOWED_VERSIONS = [lib_constants.IP_VERSION_4, lib_constants.IP_VERSION_6]
 PORT_RANGE_MIN = 1
 PORT_RANGE_MAX = 65535
 
-# TODO(bence romsics): move this to neutron_lib.constants
-DHCPV6_CLIENT_PORT = 546
-
 # Configuration values for accept_ra sysctl, copied from linux kernel
 # networking (netdev) tree, file Documentation/networking/ip-sysctl.txt
 #
diff --git a/neutron/tests/unit/agent/dhcp/test_agent.py b/neutron/tests/unit/agent/dhcp/test_agent.py
index daec357f002..3b46a3a070c 100644
--- a/neutron/tests/unit/agent/dhcp/test_agent.py
+++ b/neutron/tests/unit/agent/dhcp/test_agent.py
@@ -33,7 +33,6 @@ from neutron.agent.linux import dhcp
 from neutron.agent.linux import interface
 from neutron.agent.metadata import driver as metadata_driver
 from neutron.common import config as common_config
-from neutron.common import constants as n_const
 from neutron.common import utils
 from neutron.conf.agent import common as config
 from neutron.conf.agent import dhcp as dhcp_config
@@ -1734,7 +1733,7 @@ class TestDeviceManager(base.BaseTestCase):
     def test_setup_calls_fill_dhcp_udp_checksums_v6(self):
         self._test_setup_helper(False)
         rule = ('-p udp -m udp --dport %d -j CHECKSUM --checksum-fill'
-                % n_const.DHCPV6_CLIENT_PORT)
+                % const.DHCPV6_CLIENT_PORT)
         expected = [mock.call.add_rule('POSTROUTING', rule)]
         self.mangle_inst_v6.assert_has_calls(expected)