--- zzzz-none-000/linux-2.6.39.4/net/ipv6/Makefile	2011-08-03 19:43:28.000000000 +0000
+++ puma6-arm-6490-729/linux-2.6.39.4/net/ipv6/Makefile	2021-11-10 13:23:11.000000000 +0000
@@ -36,6 +36,7 @@
 
 obj-$(CONFIG_IPV6_SIT) += sit.o
 obj-$(CONFIG_IPV6_TUNNEL) += ip6_tunnel.o
+obj-$(CONFIG_IPV6_GRE) += ip6_gre.o
 
 obj-y += addrconf_core.o exthdrs_core.o