diff --git i/src/test/recovery/t/027_stream_regress.pl w/src/test/recovery/t/027_stream_regress.pl
index 0596980b1a6..782f24b429f 100644
--- i/src/test/recovery/t/027_stream_regress.pl
+++ w/src/test/recovery/t/027_stream_regress.pl
@@ -58,6 +58,7 @@ my $extra_opts = $ENV{EXTRA_REGRESS_OPTS} || "";
system_or_bail($ENV{PG_REGRESS} . " $extra_opts " .
"--dlpath=\"$dlpath\" " .
"--bindir= " .
+ "--host=" . $node_primary->host . " " .
"--port=" . $node_primary->port . " " .
"--schedule=../regress/parallel_schedule " .
"--max-concurrent-tests=20 " .