From ed3b426e1cc1c17a0d3f81728302484149d0b454 Mon Sep 17 00:00:00 2001
From: Miguel Ferreira <miguelferreira@me.com>
Date: Wed, 3 Jan 2018 20:28:28 +0100
Subject: [PATCH] Ignore changes to propagating_vgws of private routing table
 (#50)

---
 main.tf | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/main.tf b/main.tf
index 14c2c5584..f482a5811 100644
--- a/main.tf
+++ b/main.tf
@@ -81,6 +81,12 @@ resource "aws_route_table" "private" {
   propagating_vgws = ["${var.private_propagating_vgws}"]
 
   tags = "${merge(var.tags, var.private_route_table_tags, map("Name", format("%s-private-%s", var.name, element(var.azs, count.index))))}"
+
+  lifecycle {
+    # When attaching VPN gateways it is common to define aws_vpn_gateway_route_propagation
+    # resources that manipulate the attributes of the routing table (typically for the private subnets)
+    ignore_changes = ["propagating_vgws"]
+  }
 }
 
 ################