diff --git a/salt/upstream/ipv6-tunnel-update.sh b/salt/upstream/ipv6-tunnel-update.sh
index ac82cad..d950e45 100644
--- a/salt/upstream/ipv6-tunnel-update.sh
+++ b/salt/upstream/ipv6-tunnel-update.sh
@@ -1,3 +1,4 @@
 #!/bin/sh
 
-curl https://{{ username }}:{{ key }}@ipv4.tunnelbroker.net/nic/update?hostname={{ tunnel_id }}
+/usr/sbin/iptables -I INPUT -p icmp -j ACCEPT
+/usr/bin/curl "https://{{ username }}:{{ key }}@ipv4.tunnelbroker.net/nic/update?hostname={{ tunnel_id }}"