Test fails on Windows 10 + WSL + Debian 10

[plicease]

% prove -bvm t/11_net_empty_port.t
t/11_net_empty_port.t ..
ok 1 - bind to 127.0.0.1
# Subtest: v4
    ok 1 - found an empty port on 127.0.0.1
    ok 2 - port 56054 on 127.0.0.1 is closed
    ok 3 - port 56054 on 127.0.0.1 is now open
    1..3
ok 2 - v4
# Subtest: v6
    # found an empty IPv6 port
    ok 1 - found an empty port on ::1
    ok 2 - port 56065 on ::1 is closed
    ok 3 - port 56065 on ::1 is now open
    1..3
ok 3 - v6
# Subtest: return value
    ok 1
    1..1
ok 4 - return value
ok 5 - Non hashref arg to empty_port
ok 6 - Specified low port to empty_port
ok 7 - Specified high port to empty_port
ok 8 - Specified non-numeric port to empty_port
ok 9 - Specified non-numeric port and udp proto to empty_port
ok 10 - 4 args to wait_port (backwards compat)
ok 11 - 3 args to wait_port
ok 12 - No args to wait_port is fatal
ok 13 - No max_wait to wait_port
ok 14 - No args to check_port is fatal
ok 15 - 2 args to check_port
# Subtest: udp-wait-port
    not ok 1 - port is down
    #   Failed test 'port is down'
    #   at t/11_net_empty_port.t line 88.
    ok 2 - port is up
    1..2
    # Looks like you failed 1 test of 2.
not ok 16 - udp-wait-port
#   Failed test 'udp-wait-port'
#   at t/11_net_empty_port.t line 96.
1..16
# Looks like you failed 1 test of 16.
Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/16 subtests

Test Summary Report
-------------------
t/11_net_empty_port.t (Wstat: 256 Tests: 16 Failed: 1)
  Failed test:  16
  Non-zero exit status: 1
Files=1, Tests=16, 18 wallclock secs ( 0.00 usr  0.03 sys +  0.04 cusr  0.07 csys =  0.14 CPU)

[syohex]

https://github.com/tokuhirom/Test-TCP/blob/2.22/lib/Net/EmptyPort.pm#L116

This recv sets EAGAIN to errno against non-listened UDP port on WSL. However expected errno is ECONREFUSED(other platforms set it ECONREFUSED). I suppose that it seems WSL issue.