make -C tools/net/ynl/tests TARGETS="ynl" TEST<TS="ynl" TEST_PROGS=ovs TEST_GEN_PROGS="" run_tests 
make: Entering directory '/srv/vmksft/testing/wt-50/tools/net/ynl/tests'
TAP version 13
1..1
# Starting 1 tests from 1 test cases.
#  RUN           ovs.crud ...
# get:
# ynl-test(2): pid:0 cache:256
# dump:
# ynl-test(2): pid:0 cache:256
#            OK  ovs.crud
ok 1 ovs.crud
# PASSED: 1 / 1 tests passed.
# Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0
make: Leaving directory '/srv/vmksft/testing/wt-50/tools/net/ynl/tests'
xx__-> echo $?
0
xx__->