From 219c3fa020aca3691953e29ca856088285152d00 Mon Sep 17 00:00:00 2001
From: downtownallday <downtownallday@gmail.com>
Date: Wed, 10 Jun 2020 11:41:26 -0400
Subject: [PATCH] Need a default value or boom

---
 setup/dns.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/setup/dns.sh b/setup/dns.sh
index cfc3879c..eaac56bd 100755
--- a/setup/dns.sh
+++ b/setup/dns.sh
@@ -67,7 +67,7 @@ done
 # default value for control-enable is no, running "nsd-checkconf -o
 # control-enable /etc/nsd/nsd.conf" returns "yes", so we explicitly
 # set it here.
-if [ -z "$PRIVATE_IPV6" -a "$TRAVIS" == "true" ]; then
+if [ -z "$PRIVATE_IPV6" -a "${TRAVIS:-}" == "true" ]; then
     cat >> /etc/nsd/nsd.conf <<EOF
   do-ip4: yes
   do-ip6: no