Only use IPv4 nameservers on Mac (#1482)

Workaround for a Docker bug: docker/for-mac#1432
quiltdata · Jan 3, 2020 · b3d0f48 · b3d0f48
1 parent 411b24e
commit b3d0f48
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/api/python/quilt3/main.py b/api/python/quilt3/main.py
@@ -66,7 +66,11 @@ def _launch_local_s3proxy():
 
     # Workaround for a Docker-for-Mac bug in which the container
     # ends up with a different DNS server than the host.
-    command += ["--dns", dns_resolver.nameservers[0]]
+    # Workaround #2: use only IPv4 addresses.
+    if sys.platform == 'darwin':
+        nameservers = [ip for ip in dns_resolver.nameservers if ip.count('.') == 3]
+        command += ["--dns", nameservers[0]]
+
     command += ["-p", "5002:80", "quiltdata/s3proxy"]
     subprocess.Popen(command)