diff --git a/configs/dk-tm4c129x/ipv6/defconfig b/configs/dk-tm4c129x/ipv6/defconfig
index 48dffb0d69..d31b78c0f9 100644
--- a/configs/dk-tm4c129x/ipv6/defconfig
+++ b/configs/dk-tm4c129x/ipv6/defconfig
@@ -634,6 +634,9 @@ CONFIG_NET_BROADCAST=y
 #
 CONFIG_NET_ICMPv6=y
 CONFIG_NET_ICMPv6_PING=y
+CONFIG_NET_ICMPv6_NEIGHBOR=y
+CONFIG_ICMPv6_NEIGHBOR_MAXTRIES=5
+CONFIG_ICMPv6_NEIGHBOR_DELAYMSEC=100
 
 #
 # IGMPv2 Client Support