Public bug reported:
Firewall rule in ip6table is incorrect, the ports need to be swapped
The file delivered - /usr/share/ufw/iptables/before6.rules
which is then copied to - /etc/ufw/before6.rules
Delivered by Package:
# allow dhcp client to work
-A ufw6-before-input -p udp -s fe80::/10 --sport 547 -d fe80::/10 --dport 546
-j ACCEPT
The ports for
--sport and --dport are swapped
Should be:
-A ufw6-before-input -p udp -s fe80::/10 --sport 546 -d fe80::/10
--dport 547 -j ACCEPT
Package version found in:
0.36-0ubuntu0.1
** Affects: ufw (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1882314
Title:
Firewall rule in before6.rules for dhcp6 is wrong
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