From 75a4315464042b63595a5c7377755d2e4a29a226 Mon Sep 17 00:00:00 2001
From: Ludovic Fernandez <ldez@users.noreply.github.com>
Date: Mon, 6 May 2019 20:11:06 +0200
Subject: [PATCH] manual: serial behavior. (#880)

---
 challenge/dns01/dns_challenge_manual.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/challenge/dns01/dns_challenge_manual.go b/challenge/dns01/dns_challenge_manual.go
index 490108dd..85da7d0e 100644
--- a/challenge/dns01/dns_challenge_manual.go
+++ b/challenge/dns01/dns_challenge_manual.go
@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"fmt"
 	"os"
+	"time"
 )
 
 const (
@@ -50,3 +51,9 @@ func (*DNSProviderManual) CleanUp(domain, token, keyAuth string) error {
 
 	return nil
 }
+
+// Sequential All DNS challenges for this provider will be resolved sequentially.
+// Returns the interval between each iteration.
+func (d *DNSProviderManual) Sequential() time.Duration {
+	return DefaultPropagationTimeout
+}