New files:
tools/testing/selftests/net/pmtu.sh

Modified files:
tools/testing/selftests/net/Makefile
tools/testing/selftests/net/pmtu-test.sh

format check ignoring tools/testing/selftests/net/pmtu.sh
format check ignoring tools/testing/selftests/net/pmtu-test.sh
git grep pmtu.sh -- tools/testing/selftests/net/Makefile:: 0
gitignore check ignoring tools/testing/selftests/net/pmtu.sh