selftests: net: add missing config for amt.sh

Test needs IPv6 multicast. smcroute currently crashes when trying
to install a route in a kernel without IPv6 multicast.

Fixes: c08e8baea78e ("selftests: add amt interface selftest script")
Link: https://lore.kernel.org/r/20240509161919.3939966-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config
index 5e4390cac17eda2c96d35c5cdcdf6899610e4367..04de7a6ba6f31810b082db2c0d90f6eacfb658a0 100644 (file)
--- a/tools/testing/selftests/net/config
+++ b/tools/testing/selftests/net/config
@@ -30,6 +30,7 @@ CONFIG_IP_GRE=m
 CONFIG_NETFILTER=y
 CONFIG_NETFILTER_ADVANCED=y
 CONFIG_NF_CONNTRACK=m
+CONFIG_IPV6_MROUTE=y
 CONFIG_IPV6_SIT=y
 CONFIG_IP_DCCP=m
 CONFIG_NF_NAT=m