When using ipv6_dev_find() in one module, it requires ipv6 not to
work as a module. Otherwise, this error occurs in build:

  undefined reference to `ipv6_dev_find'.

So fix it by adding "depends on IPV6 || IPV6=n" to tipc/Kconfig,
as it does in sctp/Kconfig.

Fixes: 5a6f6f579178 ("tipc: set ub->ifindex for local ipv6 address")
Reported-by: kernel test robot <l...@intel.com>
Acked-by: Randy Dunlap <rdun...@infradead.org>
Signed-off-by: Xin Long <lucien....@gmail.com>
---
 net/tipc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/tipc/Kconfig b/net/tipc/Kconfig
index 9dd7802..be1c400 100644
--- a/net/tipc/Kconfig
+++ b/net/tipc/Kconfig
@@ -6,6 +6,7 @@
 menuconfig TIPC
        tristate "The TIPC Protocol"
        depends on INET
+       depends on IPV6 || IPV6=n
        help
          The Transparent Inter Process Communication (TIPC) protocol is
          specially designed for intra cluster communication. This protocol
-- 
2.1.0

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