diff --git a/vmware_nsxlib/v3/policy/constants.py b/vmware_nsxlib/v3/policy/constants.py
index 8455eb61..d1f034c8 100644
--- a/vmware_nsxlib/v3/policy/constants.py
+++ b/vmware_nsxlib/v3/policy/constants.py
@@ -70,7 +70,6 @@ ATTACHMENT_PARENT = "PARENT"
 ATTACHMENT_CHILD = "CHILD"
 ATTACHMENT_INDEPENDENT = "INDEPENDENT"
 
-IPV6_RA_MODE_RA_ONLY = "RA_ONLY"
 IPV6_RA_MODE_DISABLED = "DISABLED"
 IPV6_RA_MODE_SLAAC_RA = "SLAAC_DNS_THROUGH_RA"
 IPV6_RA_MODE_SLAAC_DHCP = "SLAAC_DNS_THROUGH_DHCP"