(Hopefully) proper fix for gentoo buildbot failure due to lacking AF_INET6 support.

This should supersede revision e3ec6b17260c (but please test before removing that).

Lib/asyncio/base_events.py

@@ -464,7 +464,11 @@ class BaseEventLoop(events.AbstractEventLoop):
             try:
                 for res in infos:
                     af, socktype, proto, canonname, sa = res
-                    sock = socket.socket(af, socktype, proto)
+                    try:
+                        sock = socket.socket(af, socktype, proto)
+                    except socket.error:
+                        # Assume it's a bad family/type/protocol combination.
+                        continue
                     sockets.append(sock)
                     if reuse_address:
                         sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR,