From 7b2906938440825ce3cf71500ca0be703e2f16cb Mon Sep 17 00:00:00 2001
From: Rui Lopes <rgl@ruilopes.com>
Date: Fri, 2 Jun 2017 21:10:33 +0100
Subject: [PATCH] disable IPv6

---
 provision/provision.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/provision/provision.sh b/provision/provision.sh
index 7d313ea..434a79a 100644
--- a/provision/provision.sh
+++ b/provision/provision.sh
@@ -8,6 +8,17 @@ config_domain=$(hostname --domain)
 echo "127.0.0.1 $config_fqdn" >>/etc/hosts
 
 
+# disable IPv6.
+cat >/etc/sysctl.d/98-disable-ipv6.conf <<'EOF'
+net.ipv6.conf.all.disable_ipv6 = 1
+net.ipv6.conf.default.disable_ipv6 = 1
+net.ipv6.conf.lo.disable_ipv6 = 1
+EOF
+systemctl restart procps
+sed -i -E 's,(GRUB_CMDLINE_LINUX=.+)",\1 ipv6.disable=1",' /etc/default/grub
+update-grub2
+
+
 # update the package cache.
 apt-get -y update