diff --git a/metal3-chart/charts/ironic/templates/_helpers.tpl b/metal3-chart/charts/ironic/templates/_helpers.tpl
index 0d1ab973..8bce5538 100644
--- a/metal3-chart/charts/ironic/templates/_helpers.tpl
+++ b/metal3-chart/charts/ironic/templates/_helpers.tpl
@@ -83,3 +83,16 @@ Get ironic CA volumeMounts
   readOnly: true
 {{- end }}
 {{- end }}
+
+{{/*
+Get the formatted "External" hostname or IP address
+*/}}
+{{- define "ironic.externalHttpHost" }}
+{{- with .Values.global }}
+{{- if regexMatch ".*:.*" .externalHttpHost }}
+{{- print "[" .externalHttpHost "]" }}
+{{- else }}
+{{- .externalHttpHost }}
+{{- end }}
+{{- end }}
+{{- end }}
diff --git a/metal3-chart/charts/ironic/templates/configmap.yaml b/metal3-chart/charts/ironic/templates/configmap.yaml
index ba43d206..6e45bd56 100644
--- a/metal3-chart/charts/ironic/templates/configmap.yaml
+++ b/metal3-chart/charts/ironic/templates/configmap.yaml
@@ -32,7 +32,9 @@ data:
   {{- else }}
     {{- $protocol = "http" }}
   {{- end }}
-  IRONIC_EXTERNAL_HTTP_URL: {{ $protocol }}://{{ $ironicCacheHost }}
+  {{- if .Values.global.externalHttpHost }}
+  IRONIC_EXTERNAL_HTTP_URL: {{ $protocol }}://{{ include "ironic.externalHttpHost" . }}:6385
+  {{- end }}
   DEPLOY_ARCHITECTURE: {{ $deployArch }}
   IRONIC_BOOT_BASE_URL: {{ $protocol }}://{{ $ironicBootHost }}
   ENABLE_PXE_BOOT: "{{ .Values.global.enable_pxe_boot }}"
diff --git a/metal3-chart/values.yaml b/metal3-chart/values.yaml
index 2d24c8a8..d68d6a96 100644
--- a/metal3-chart/values.yaml
+++ b/metal3-chart/values.yaml
@@ -60,6 +60,9 @@ global:
   # IP Address assigned to network interface on provisioning network
   provisioningIP: ""
 
+  # Hostname or IP for accessing the Ironic API server from a non-provisioning network
+  externalHttpHost: ""
+
   # Name for the MariaDB service
   databaseServiceName: metal3-mariadb