make -C tools/testing/selftests TARGETS="net/forwarding" TEST_PROGS=ip6gree_flat_keys.sh TEST_GEN_PROGS="" run_tests
make: Entering directory '/home/virtme/testing-2/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing-2/tools/testing/selftests/net/forwarding'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing-2/tools/testing/selftests/net/forwarding'
make[1]: Entering directory '/home/virtme/testing-2/tools/testing/selftests/net/forwarding'
TAP version 13
1..1
# timeout set to 10800
# selftests: net/forwarding: ip6gre_flat_keys.sh
# 7.40 [+7.40] TEST: GRE flat IPv4-in-IPv6 with ikey/okey                          [ OK ]
# 7.74 [+0.33] TEST: GRE flat IPv6-in-IPv6 with ikey/okey                          [ OK ]
# 9.08 [+1.34] TEST: ping GRE IPv6, packet size 1800 after MTU change              [ OK ]
ok 1 selftests: net/forwarding: ip6gre_flat_keys.sh
make[1]: Leaving directory '/home/virtme/testing-2/tools/testing/selftests/net/forwarding'
make: Leaving directory '/home/virtme/testing-2/tools/testing/selftests'
xx__-> echo $?
0
xx__->