From 6e46e56b21585e5a96b7e202e6122e1663c935d8 Mon Sep 17 00:00:00 2001
From: Jeff Mitchell <jeffrey.mitchell@gmail.com>
Date: Mon, 14 Dec 2015 21:13:17 -0500
Subject: [PATCH] Ensure advertise address detection runs without a specified
 HA backend

Ping #840
---
 command/server.go | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/command/server.go b/command/server.go
index 5927b1b6db..93baec7cf6 100644
--- a/command/server.go
+++ b/command/server.go
@@ -116,6 +116,7 @@ func (c *ServerCommand) Run(args []string) int {
 
 	coreConfig := &vault.CoreConfig{
 		Physical:           backend,
+		AdvertiseAddr:      config.Backend.AdvertiseAddr,
 		HAPhysical:         nil,
 		AuditBackends:      c.AuditBackends,
 		CredentialBackends: c.CredentialBackends,
@@ -147,7 +148,14 @@ func (c *ServerCommand) Run(args []string) int {
 	}
 
 	// Attempt to detect the advertise address possible
-	if detect, ok := coreConfig.HAPhysical.(physical.AdvertiseDetect); ok && coreConfig.AdvertiseAddr == "" {
+	var detect physical.AdvertiseDetect
+	var ok bool
+	if coreConfig.HAPhysical != nil {
+		detect, ok = coreConfig.HAPhysical.(physical.AdvertiseDetect)
+	} else {
+		detect, ok = coreConfig.Physical.(physical.AdvertiseDetect)
+	}
+	if ok && coreConfig.AdvertiseAddr == "" {
 		advertise, err := c.detectAdvertise(detect, config)
 		if err != nil {
 			c.Ui.Error(fmt.Sprintf("Error detecting advertise address: %s", err))