new file mode 100644
--- /dev/null
+++ b/stream_realip_hostname.t
@@ -0,0 +1,100 @@
+#!/usr/bin/perl
+
+# (C) Sergey Kandaurov
+# (C) Nginx, Inc.
+
+# Tests for stream realip module, 'unix:' and hostname in set_real_ip_from.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+use Socket qw/ $CRLF /;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+use Test::Nginx::Stream qw/ stream /;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new()->has(qw/stream stream_return stream_realip unix/)
+	->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+daemon off;
+
+events {
+}
+
+stream {
+    server {
+        listen      unix:%%TESTDIR%%/unix.sock proxy_protocol;
+        listen      127.0.0.1:8080;
+        listen      127.0.0.1:8082 proxy_protocol;
+        return      $remote_addr;
+
+        set_real_ip_from unix:;
+    }
+
+    server {
+        listen      127.0.0.1:8081;
+        proxy_pass  unix:%%TESTDIR%%/unix.sock;
+    }
+
+    server {
+        listen      127.0.0.1:8085 proxy_protocol;
+        listen      unix:%%TESTDIR%%/unix2.sock proxy_protocol;
+        return      $remote_addr;
+
+        set_real_ip_from localhost;
+    }
+
+    server {
+        listen      127.0.0.1:8083;
+        proxy_pass  127.0.0.1:8085;
+    }
+
+    server {
+        listen      127.0.0.1:8084;
+        proxy_pass  unix:%%TESTDIR%%/unix2.sock;
+    }
+}
+
+EOF
+
+$t->try_run('no stream realip hostnames support');
+
+plan(skip_all => 'no 127.0.0.1 on host')
+	if http_get('/') ne '127.0.0.1';
+
+$t->plan(4);
+
+###############################################################################
+
+is(pp_get(8081, "PROXY TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}"),
+	'192.0.2.1', 'realip unix');
+isnt(pp_get(8082, "PROXY TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}"),
+	'192.0.2.1', 'realip unix - no match');
+
+is(pp_get(8083, "PROXY TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}"),
+	'192.0.2.1', 'realip hostname');
+isnt(pp_get(8084, "PROXY TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}"),
+	'192.0.2.1', 'realip hostname - no match');
+
+###############################################################################
+
+sub pp_get {
+	my ($port, $proxy) = @_;
+	stream(PeerPort => port($port))->io($proxy);
+}
+
+###############################################################################