diff -r 4e7bd6180b53 -r 334c1ea57136 mercurial/configitems.py
--- a/mercurial/configitems.py	Tue May 21 17:43:55 2019 +0200
+++ b/mercurial/configitems.py	Tue May 21 17:44:15 2019 +0200
@@ -415,6 +415,9 @@
 coreconfigitem('devel', 'debug.peer-request',
     default=False,
 )
+coreconfigitem('devel', 'discovery.randomize',
+    default=True,
+)
 _registerdiffopts(section='diff')
 coreconfigitem('email', 'bcc',
     default=None,