Hi Arnd, your commit fabb13db448e ("fou: add Kconfig options for IPv6 support") has shown up in today's linux-next. ./scripts/checkkconfigsymbols.py warned because of the following statement in net/ipv6/Makefile:
+obj-$(CONFIG_NET_FOU_IPV6_TUNNELS) += fou6.o The referenced Kconfig option does not exist, but I assume the right option is 'IPV6_FOU_TUNNEL'? In case yes, the modified #if block in the commit could be removed (redundant check). Best regards, Valentin