netfilter-persistente debian jessie ipv6 issue

Parece que no puedo save nuevas reglas IPv4 reglas con netfilter-persistente. Obtuve el siguiente error:

May 10 19:41:53 debian systemd[1]: Starting netfilter persistent configuration... -- Subject: Unit netfilter-persistent.service has begun with start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit netfilter-persistent.service has begun starting up. May 10 19:41:53 debian netfilter-persistent[3099]: run-parts: executing /usr/share/netfilter-persistent/plugins.d/15-ip4tables start May 10 19:41:53 debian netfilter-persistent[3099]: run-parts: /usr/share/netfilter-persistent/plugins.d/15-ip4tables exited with return code 2 May 10 19:41:53 debian netfilter-persistent[3099]: run-parts: executing /usr/share/netfilter-persistent/plugins.d/25-ip6tables start May 10 19:41:53 debian systemd[1]: netfilter-persistent.service: main process exited, code=exited, status=1/FAILURE May 10 19:41:53 debian systemd[1]: Failed to start netfilter persistent configuration. -- Subject: Unit netfilter-persistent.service has failed 

Este es el siguiente script que está fallando:

 #!/bin/sh # This file is part of netfilter-persistent # (was iptables-persistent) # Copyright (C) 2009, Simon Richter <sjr@debian.org> # Copyright (C) 2010, 2014 Jonathan Wiltshire <jmw@debian.org> # # This program is free software; you can networkingistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation, either version 3 # of the License, or (at your option) any later version. exit 0 set -e rc=0 load_rules() { #load IPv6 rules if [ ! -f /etc/iptables/rules.v6 ]; then echo "Warning: skipping IPv6 (no rules to load)" exit 0 else ip6tables-restre < /etc/iptables/rules.v6 2> /dev/null if [ $? -ne 0 ]; then rc=1 fi fi } save_rules() { #save IPv6 rules #need at least ip6table_filter loaded: /sbin/modprobe -q ip6table_filter if [ ! -f /proc/net/ip6_tables_names ]; then log_action_cont_msg "Warning: skipping IPv6 (no modules loaded)" elif [ -x /sbin/ip6tables-save ]; then touch /etc/iptables/rules.v6 chmod 0640 /etc/iptables/rules.v6 ip6tables-save > /etc/iptables/rules.v6 if [ $? -ne 0 ]; then rc=1 fi fi } flush_rules() { if [ ! -f /proc/net/ip6_tables_names ]; then echo "Warning: skipping IPv6 (no module loaded)" elif [ -x /sbin/ip6tables ]; then for param in FZX; do /sbin/ip6tables -$param; done for table in $(cat /proc/net/ip6_tables_names) do /sbin/ip6tables -t $table -F /sbin/ip6tables -t $table -Z /sbin/ip6tables -t $table -X done for chain in INPUT FORWARD OUTPUT do /sbin/ip6tables -P $chain ACCEPT done fi } case "$1" in start|restart|reload|force-reload) load_rules ;; save) save_rules ;; stop) # Why? because if stop is used, the firewall gets flushed for a variable # amount of time during package upgrades, leaving the machine vulnerable # It's also not always desirable to flush during purge echo "Automatic flushing disabled, use \"flush\" instead of \"stop\"" ;; flush) flush_rules ;; *) echo "Usage: $0 {start|restart|reload|force-reload|save|flush}" >&2 exit 1 ;; esac exit $rc