test/internals_test.rb in redis-4.0.1 vs test/internals_test.rb in redis-4.0.2

@@ -332,10 +332,16 @@
         begin
           tries = 5
           begin
             sa = Socket.pack_sockaddr_in(1024 + Random.rand(63076), hosts[af])
             s.bind(sa)
-          rescue Errno::EADDRINUSE
+          rescue Errno::EADDRINUSE => e
+            # On JRuby (9.1.15.0), if IPv6 is globally disabled on the system,
+            # we get an EADDRINUSE with belows message.
+            if e.message =~ /Protocol family unavailable/
+              return
+            end
+
             tries -= 1
             retry if tries > 0
 
             raise
           end