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diff --git a/tests/sys/net/routing/test_routing.sh b/tests/sys/net/routing/test_routing.sh
--- a/tests/sys/net/routing/test_routing.sh
+++ b/tests/sys/net/routing/test_routing.sh
@@ -222,10 +222,96 @@
vnet_cleanup
}
+atf_test_case "test_ecmp_routes_by_event" "cleanup"
+test_ecmp_routes_by_event_head()
+{
+ atf_set descr 'Test reachability of ECMP routes when an ifp gets down'
+ atf_set require.user root
+}
+
+test_ecmp_routes_by_event_body()
+{
+ local jname epair0 epair1 lo0_addr lo1_addr ep0_prefix ep1_prefix
+
+ jname="ecmp_route_by_event"
+ lo0_addr="3fff:a::1"
+ lo1_addr="3fff:b::1"
+ ep0_prefix="3fff:1::"
+ ep1_prefix="3fff:2::"
+
+ vnet_init
+ epair0=$(vnet_mkepair)
+ epair1=$(vnet_mkepair)
+
+ vnet_mkjail ${jname} ${epair0}b
+ atf_check -o ignore \
+ ifconfig ${epair1}b vnet ${jname}
+
+ atf_check -o ignore \
+ ifconfig ${epair0}a inet6 ${ep0_prefix}a/127 up
+ atf_check -o ignore \
+ ifconfig ${epair1}a inet6 ${ep1_prefix}a/127 up
+ atf_check -o ignore \
+ ifconfig -j ${jname} ${epair0}b inet6 ${ep0_prefix}b/127 up
+ atf_check -o ignore \
+ ifconfig -j ${jname} ${epair1}b inet6 ${ep1_prefix}b/127 up
+ atf_check -o ignore \
+ ifconfig lo0 inet6 ${lo0_addr}/128 up
+ atf_check -o ignore \
+ ifconfig -j ${jname} lo0 inet6 ${lo1_addr}/128 up
+
+ # Create ECMP routes with via epair0 and epair1 to loopback
+ atf_check -o ignore \
+ route -6 add -net ${lo1_addr}/128 -gateway ${ep0_prefix}b
+ atf_check -o ignore \
+ route -6 add -net ${lo1_addr}/128 -gateway ${ep1_prefix}b
+ atf_check -o ignore \
+ route -6j ${jname} add -net ${lo0_addr}/128 -gateway ${ep0_prefix}a
+ atf_check -o ignore \
+ route -6j ${jname} add -net ${lo0_addr}/128 -gateway ${ep1_prefix}a
+
+ # Check the connection
+ atf_check -o ignore ping -c1 -t1 ${ep0_prefix}b
+ atf_check -o ignore ping -c1 -t1 ${ep1_prefix}b
+ atf_check -o ignore ping -c1 -t1 -S ${lo0_addr} ${lo1_addr}
+
+ # Down one of the nexthop interfaces
+ atf_check -o ignore \
+ ifconfig ${epair0}a down
+ # Since epair doesn't support linkstate and we need to receive
+ # the icmp reply, shutdown the other side of epair too
+ atf_check -o ignore \
+ ifconfig -j${jname} ${epair0}b down
+
+ # Test if our destination is still reachable
+ sleep 0.01
+ atf_check -o ignore ping -c1 -t1 -S ${lo0_addr} ${lo1_addr}
+
+ # Do the same thing for other interface
+ atf_check -o ignore \
+ ifconfig ${epair0}a up
+ atf_check -o ignore \
+ ifconfig -j${jname} ${epair0}b up
+ atf_check -o ignore \
+ ifconfig ${epair1}a down
+ atf_check -o ignore \
+ ifconfig -j${jname} ${epair1}b down
+
+ # Test if our destination is still reachable
+ sleep 0.01
+ atf_check -o ignore ping -c1 -t1 -S ${lo0_addr} ${lo1_addr}
+}
+
+test_ecmp_routes_by_event_cleanup()
+{
+ vnet_cleanup
+}
+
atf_init_test_cases()
{
atf_add_test_case "add_lowest_metric"
atf_add_test_case "add_default_metric"
atf_add_test_case "delete_route_with_metric"
+ atf_add_test_case "test_ecmp_routes_by_event"
}

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