diff --git a/pep-0381.txt b/pep-0381.txt
index a43c245b5..79c4bd391 100644
--- a/pep-0381.txt
+++ b/pep-0381.txt
@@ -46,16 +46,17 @@ When a mirror is proposed on the mailing list, it is manually
 added in a mirror list in the PyPI application after it
 has been checked to be compliant with the mirroring rules.
 
-The mirror list is handled by a DNS entry for this hostname:
+The mirror list is provided as a list of host names of the
+form
 
-    mirrors.pypi.python.org
+    X.pypi.python.org
 
-When a mirror is added into the DNS, it becomes an official
-IP for `mirrors.pypi.python.org`, and requests will be sent
-to the given IP. Therefore the mirror maintainer should not
-change the IP provided. If the IP has to change for any reason,
-the mirror maintainer has to send a mail to catalog-SIG at least
-one week before the change so the DNS entry can be changed on time.
+The values of X are the sequence a,b,c,...,aa,ab,...
+a.pypi.python.org is the master server; the mirrors start
+with b. A CNAME record last.pypi.python.org points to the
+last host name. Mirror operators should use a static address,
+and report planned changes to that address in advance to
+catalog-sig.
 
 The new mirror also appears at `http://pypi.python.org/mirrors`
 which is a human-readable page that gives the list of mirrors.