Jenkins failure on windows: ENETUNREACH undeclared.
On https://jenkins.torproject.org/job/tor-ci-windows-master/22/consoleFull I see:
08:59:23 ../tor/src/test/test_util.c:5402:39: error: 'ENETUNREACH' undeclared (first use in this function)
This appears to be new in c46e99c43c4ee03, which is not in anything before 0.4.2.