With NETFILTER_XT_TARGET_TEE=y and IP6_NF_IPTABLES=m, we get a link
error when referencing the NF_DUP_IPV6 module:
net/netfilter/xt_TEE.o: In function `tee_tg6':
xt_TEE.c:(.text+0x14): undefined reference to `nf_dup_ipv6'
The problem here is the 'select NF_DUP_IPV6 if IP6_NF_IPTABLES'
that forces NF_DUP_IPV6 to be =m as well rather than setting it
to =y as was intended here. Adding a soft dependency on
IP6_NF_IPTABLES avoids that broken configuration.
Fixes: 35bf1ccecaaa ("netfilter: Kconfig: Change IPv6 select dependencies")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
net/netfilter/Kconfig | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index 8aa4883c176a..e42c38c99741 100644
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -985,7 +985,8 @@ config NETFILTER_XT_TARGET_TEE
tristate '"TEE" - packet cloning to alternate destination'
depends on NETFILTER_ADVANCED
depends on IPV6 || IPV6=n
- depends on !NF_CONNTRACK || NF_CONNTRACK
+ depends on NF_CONNTRACK || !NF_CONNTRACK
+ depends on IP6_NF_IPTABLES || !IP6_NF_IPTABLES
select NF_DUP_IPV4
select NF_DUP_IPV6 if IP6_NF_IPTABLES
---help---
--
2.9.0
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