make -C tools/testing/selftests TARGETS=drivers/net/netdevsim TEST_PROGS=ppeer.sh TEST_GEN_PROGS="" run_tests make: Entering directory '/home/virtme/testing-14/tools/testing/selftests' make[1]: Entering directory '/home/virtme/testing-14/tools/testing/selftests/drivers/net/netdevsim' make[1]: Nothing to be done for 'all'. make[1]: Leaving directory '/home/virtme/testing-14/tools/testing/selftests/drivers/net/netdevsim' make[1]: Entering directory '/home/virtme/testing-14/tools/testing/selftests/drivers/net/netdevsim' TAP version 13 1..1 # overriding timeout to 2400 # selftests: drivers/net/netdevsim: peer.sh [ 1284.267510][T11271] netdevsim netdevsim354 eni354np1: renamed from eth0 [ 1284.295361][T11270] netdevsim netdevsim582 eni582np1: renamed from eth1 [ 1287.920101][T11263] Could not find device with ifindex 2000 in netnsfd 11 [ 1287.921003][T11263] Could not find netns with fd: 2000 [ 1287.921724][T11263] Cannot link a netdevsim to itself [ 1287.922608][T11263] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint). ok 1 selftests: drivers/net/netdevsim: peer.sh make[1]: Leaving directory '/home/virtme/testing-14/tools/testing/selftests/drivers/net/netdevsim' make: Leaving directory '/home/virtme/testing-14/tools/testing/selftests' xx__-> echo $? 0 xx__->