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
# 25.51 [+25.51] TEST: GRE hierarchical IPv4-in-IPv6                                 [ OK ]
# 28.41 [+2.90] TEST: GRE hierarchical IPv6-in-IPv6                                 [ OK ]

DETECTED CRASH, lowering timeout
# 32.57 [+4.16] TEST: ping GRE IPv6, packet size 1800 after MTU change              [ OK ]
# 36.11 [+3.53] TEST: GRE hierarchical IPv4-in-IPv6 (new remote)                    [ OK ]
# 39.11 [+3.01] TEST: GRE hierarchical IPv6-in-IPv6 (new remote)                    [ OK ]
# 43.34 [+4.22] TEST: GRE hierarchical IPv4-in-IPv6 (old remote)                    [ OK ]
# 46.37 [+3.03] 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__->