diff --git a/pygoscelis-config b/pygoscelis-config
index 72d25df..272b8ac 100644
--- a/pygoscelis-config
+++ b/pygoscelis-config
@@ -1061,7 +1061,7 @@ CONFIG_DEFAULT_TCP_CONG="cubic"
 # CONFIG_TCP_MD5SIG is not set
 CONFIG_IPV6=y
 # CONFIG_IPV6_ROUTER_PREF is not set
-# CONFIG_IPV6_OPTIMISTIC_DAD is not set
+CONFIG_IPV6_OPTIMISTIC_DAD=y
 CONFIG_INET6_AH=y
 CONFIG_INET6_ESP=y
 # CONFIG_INET6_ESP_OFFLOAD is not set