Another one found in G/kvm:
DEBUG| [stdout] # selftests: net: fib_rule_tests.sh DEBUG| [stdout] # Error: Unknown device type. DEBUG| [stdout] not ok 20 selftests: net: fib_rule_tests.sh # exit=2
Another one found in G/kvm:
DEBUG| [stdout] # selftests: net: fib_rule_tests.sh
DEBUG| [stdout] # Error: Unknown device type.
DEBUG| [stdout] not ok 20 selftests: net: fib_rule_tests.sh # exit=2