t50-connect-eyeballs.t.log.patch

diff --git a/t/50connect-eyeballs.t b/t/50connect-eyeballs.t
index 832c1b051..717ac0729 100644
--- a/t/50connect-eyeballs.t
+++ b/t/50connect-eyeballs.t
@@ -1,5 +1,6 @@
 use strict;
 use warnings;
+use File::Temp qw(tempdir);
 use IO::Socket::IP;
 use Test::More;
 use Time::HiRes qw(time);
@@ -39,8 +40,10 @@ my $quic_port = empty_port({
     proto => "udp",
 });
 
+my $tempdir = tempdir(CLEANUP => 1);
+
 my $server = $injectaddr->(sub {
-    spawn_h2o(<< "EOT");
+    my $server = spawn_h2o(<< "EOT");
 listen:
   type: quic
   port: $quic_port
@@ -56,7 +59,23 @@ hosts:
          proxy.timeout.connect: 10000
          proxy.happy-eyeballs.name-resolution-delay: 500
          proxy.happy-eyeballs.connection-attempt-delay: 1000
+  h2olog:
+    listen:
+      type: unix
+      port: $tempdir/h2olog.sock
+    h2olog: appdata
+    paths: {}
 EOT
+
+    my $h2olog_pid = fork;
+    die "fork failed:$!"
+        unless defined $h2olog_pid;
+    if ($h2olog_pid == 0) {
+        exec "exec misc/h2olog -u $tempdir/h2olog.sock > /tmp/h2olog.out";
+        die "exec failed:$!";
+    }
+
+    $server;
 });
 
 sleep 1; # inject some delay, as the following tests are a bit time-sensitive
@@ -96,6 +115,7 @@ foreach_http(sub {
         cmp_ok $elapsed, ">=", $expected_time->[0];
         cmp_ok $elapsed, "<=", $expected_time->[1];
     };
+    if (0) {
     subtest "one v4" => sub {
         $check_access->("p$v4_port.4127-0-0-1", "127.0.0.1", [0, 0.5]);
     };
@@ -111,6 +131,7 @@ foreach_http(sub {
     subtest "v4 -> name-resolution-delay -> v6" => sub {
         $check_access->("p$v4_port.4127-0-0-1.d600.p$v6_port.6--1", "127.0.0.1", [0.5, 1]);
     };
+    }
     my $blackhole_ipv4_dash = $blackhole_ip_v4;
     $blackhole_ipv4_dash =~ tr/./-/;
     subtest "v4-blackhole -> v4" => sub {