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
# 21.77 [+21.77] TEST: GRE flat IPv4-in-IPv6 with ikey/okey                          [ OK ]
# 24.76 [+2.99] TEST: GRE flat IPv6-in-IPv6 with ikey/okey                          [ OK ]

DETECTED CRASH, lowering timeout
# 28.66 [+3.89] TEST: ping GRE IPv6, packet size 1800 after MTU change              [ OK ]
# 32.17 [+3.51] TEST: GRE flat IPv4-in-IPv6 with ikey/okey (new remote)             [ OK ]
# 35.12 [+2.96] TEST: GRE flat IPv6-in-IPv6 with ikey/okey (new remote)             [ OK ]
# 39.22 [+4.09] TEST: GRE flat IPv4-in-IPv6 with ikey/okey (old remote)             [ OK ]
# 42.17 [+2.95] TEST: GRE flat IPv6-in-IPv6 with ikey/okey (old remote)             [ OK ]
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__->