--- ../test/test_alpn.ml	2026-05-16 18:16:54.967209574 +0300
+++ ../test/test_alpn.ml	2026-05-16 18:17:34.106194617 +0300
@@ -25,10 +25,10 @@
 module P = Paf_mirage.Make (Tcpip_stack_socket.V4V6.TCP)
 
 let unix_stack () =
-  Tcpip_stack_socket.V4V6.UDP.connect ~ipv4_only:false ~ipv6_only:false
+  Tcpip_stack_socket.V4V6.UDP.connect ~ipv4_only:true ~ipv6_only:false
     Ipaddr.V4.Prefix.global None
   >>= fun udpv4 ->
-  Tcpip_stack_socket.V4V6.TCP.connect ~ipv4_only:false ~ipv6_only:false
+  Tcpip_stack_socket.V4V6.TCP.connect ~ipv4_only:true ~ipv6_only:false
     Ipaddr.V4.Prefix.global None
   >>= fun tcpv4 -> Tcpip_stack_socket.V4V6.connect udpv4 tcpv4