Помогите разобраться,где надо смотреть: при попытке «sudo ufw enable» выдает ошибку
ERROR: problem running ufw-init
iptables-restore: line 4 failed
iptables-restore: line 75 failed
iptables-restore: line 34 failed
ip6tables-restore: line 4 failed
ip6tables-restore: line 142 failed
ip6tables-restore: line 34 failed
Problem running '/etc/ufw/before.rules'
Problem running '/etc/ufw/user.rules'
Problem running '/etc/ufw/before6.rules'
Problem running '/etc/ufw/user6.rules'