make -C tools/testing/selftests TARGETS="net/forwarding" TEST_PROGS=ip6gree_hier.sh TEST_GEN_PROGS="" run_tests
make: Entering directory '/home/virtme/testing-4/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing-4/tools/testing/selftests/net/forwarding'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing-4/tools/testing/selftests/net/forwarding'
make[1]: Entering directory '/home/virtme/testing-4/tools/testing/selftests/net/forwarding'
TAP version 13
1..1
# overriding timeout to 21600
# selftests: net/forwarding: ip6gre_hier.sh

DETECTED CRASH, lowering timeout
# 18.64 [+18.64] TEST: GRE hierarchical IPv4-in-IPv6                                 [ OK ]
# 20.83 [+2.19] TEST: GRE hierarchical IPv6-in-IPv6                                 [ OK ]
# 23.66 [+2.84] TEST: ping GRE IPv6, packet size 1800 after MTU change              [ OK ]
# 26.21 [+2.55] TEST: GRE hierarchical IPv4-in-IPv6 (new remote)                    [ OK ]
# 28.31 [+2.09] TEST: GRE hierarchical IPv6-in-IPv6 (new remote)                    [ OK ]
# 31.33 [+3.02] TEST: GRE hierarchical IPv4-in-IPv6 (old remote)                    [ OK ]
# 33.40 [+2.07] TEST: GRE hierarchical IPv6-in-IPv6 (old remote)                    [ OK ]
ok 1 selftests: net/forwarding: ip6gre_hier.sh
make[1]: Leaving directory '/home/virtme/testing-4/tools/testing/selftests/net/forwarding'
make: Leaving directory '/home/virtme/testing-4/tools/testing/selftests'
xx__-> echo $?
0
xx__->