This looks like the issue:
Stdout: ; Stderr: RTNETLINK answers: Invalid argument ip6tables-restore v1.4.21: ip6tables-restore: unable to initialize table 'filter'
You might need to manually load the module? It's there in my config:
$ lsmod | grep ip6table_filter ip6table_filter 16384 0 ip6_tables 28672 1 ip6table_filter x_tables 36864 8 ip6table_filter,xt_mark,ip_tables,xt_multiport,iptable_filter,ebtables,iptable_mangle,ip6_tables
This looks like the issue:
Stdout: ; Stderr: RTNETLINK answers: Invalid argument
ip6tables-restore v1.4.21: ip6tables-restore: unable to initialize table 'filter'
You might need to manually load the module? It's there in my config:
$ lsmod | grep ip6table_filter filter, xt_mark, ip_tables, xt_multiport, iptable_ filter, ebtables, iptable_ mangle, ip6_tables
ip6table_filter 16384 0
ip6_tables 28672 1 ip6table_filter
x_tables 36864 8 ip6table_