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to be more exact and to maybe help others. With the firewall turned off and after a reboot we did this command ip -6 r s this gave us ( which is missing with the firewall on) xxxxxxxxxxx dev eth0 proto kernel metric 256 pref medium xxxxxxxxxxx dev eth0 proto kernel metric 256 pref medium...

ive had help from someone that knows linux very well and we needed to add this line to /etc/network/interfaces post-up ip -6 route add default via fe80::1 dev eth0 and now everything seems to work for ipv6 - incomeing and outgoing

this is the script file #!/bin/bash #ATTENTION! # #DO NOT MODIFY THIS FILE BECAUSE IT WAS GENERATED AUTOMATICALLY, #SO ALL YOUR CHANGES WILL BE LOST THE NEXT TIME THE FILE IS GENERATED. set -e echo 0 > /proc/sys/net/ipv4/ip_forward ([ -f /var/lock/subsys/ipchains ] && /etc/init.d/ipchains...

ACCEPT ipv6-icmp anywhere anywhere ipv6-icmptype 134 code 0 ACCEPT ipv6-icmp anywhere anywhere ipv6-icmptype 135 code 0 ACCEPT ipv6-icmp anywhere anywhere ipv6-icmptype 136 code 0 ACCEPT ipv6-icmp...

Chain INPUT (policy DROP) target prot opt source destination ACCEPT all anywhere anywhere state RELATED,ESTABLISHED REJECT tcp anywhere anywhere tcp flags:!FIN,SYN,RST,ACK/SYN state NEW reject-with tcp-reset DROP...

couldnt get this to work . in the file /usr/local/psa/var/modules/firewall/firewall-active.sh there is no occurence of apply_rule /sbin/iptables -A OUTPUT -j DROP - probably looks different because this is for obsidian. I tried adding it before this instead apply_rule /sbin/iptables -A...

I am currently migrating my plesk server to another ( ubuntu 16.04 onyx to ubuntu 18.04 obsidian both dedicated cloud server with 1und1 / ionos) and noticed my let encrypt renewal failed on the new server. After some testing i discovered that with the plesk firewall on it would block all ipv6...