Ubuntu
ufw package

  1. Bug #251355
  2. Comment #2

Comment 2 for bug 251355

Revision history for this message
Mackenzie Morgan (maco.m) wrote : Re: Please set /etc/default/ufw's ipv6 line to yes

IPv6 is enabled by default in Ubuntu *in general* though.

What I did:
sudo ufw enable
sudo ufw default deny
iptables -nL
ip6tables -nL

iptables shows DROP on in and forward. ip6tables shows ALLOW on all.

Then:
Edit the /etc/default/ufw to say IPV6=yes
ip6tables -nL

DROP on inbound and forward. ALLOW on out.

Is it intentional as documented in the manpage, or is it a bug as implied in /etc/default/ufw? They disagree on what this line does.