[09:47] <AutisticPenguin> Hi all. I have found a bug in Ubuntu 20.04 LTS. '/etc/network/if-up.d/postfix' executes fine when a network goes up but '/etc/network/if-down.d/postfix' does not execute when a network goes down. I created a general file in place of 'postfix' and the same goes.
[12:31] <ahasenack> are both files executable?