tests-extra: improve stability of dnssec/keystores

diff --git a/tests-extra/tests/dnssec/keystores/test.py b/tests-extra/tests/dnssec/keystores/test.py
index 4dea41dda058ed951d335d0b3bb578e1c131eddf..7f93f37708c38f2db9731bdb7d78bf292105fad0 100644 (file)
--- a/tests-extra/tests/dnssec/keystores/test.py
+++ b/tests-extra/tests/dnssec/keystores/test.py
@@ -66,6 +66,7 @@ server.gen_confile()
 server.reload()
 
 server.ctl("zone-key-rollover %s ksk" % zone[0].name)
+serial += 1 # wait for two increments
 serial = server.zone_wait(zone, serial)
 check_key_count(server, "keys0ksk", 1)
 check_key_count(server, "keys1", 0)