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-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_flat_keys.sh
# 16.85 [+16.85] TEST: GRE flat IPv4-in-IPv6 with ikey/okey                          [ OK ]
# 19.08 [+2.24] TEST: GRE flat IPv6-in-IPv6 with ikey/okey                          [ OK ]
# 21.92 [+2.84] TEST: ping GRE IPv6, packet size 1800 after MTU change              [ OK ]
# 24.44 [+2.52] TEST: GRE flat IPv4-in-IPv6 with ikey/okey (new remote)             [ OK ]
# 26.47 [+2.03] TEST: GRE flat IPv6-in-IPv6 with ikey/okey (new remote)             [ OK ]
# 29.32 [+2.85] TEST: GRE flat IPv4-in-IPv6 with ikey/okey (old remote)             [ OK ]
# 31.33 [+2.01] TEST: GRE flat IPv6-in-IPv6 with ikey/okey (old remote)             [ OK ]

DETECTED CRASH, lowering timeout
ok 1 selftests: net/forwarding: ip6gre_flat_keys.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__->