You filed the bug report against NetworkManager. But the "up.d" hook is
called differently in NM, see https://netplan.io/faq#use-pre-up-post-up-
etc-hook-scripts
If this is about /etc/network/if-up.d then it should be targeted towards
the "ifupdown" package. I'm adding a corresponding bug task.
** Also affects: ifupdown (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2064093
Title:
if-up.d files do not have effect on ubuntu 24.04 LTS
Status in ifupdown package in Ubuntu:
New
Status in network-manager package in Ubuntu:
New
Bug description:
Some time ago I wrote a detailed answer to fix an error for lowering
MTU size for a cisco-compatible VPN
(here:https://unix.stackexchange.com/questions/768757/unable-to-ssh-
into-remote-machine-but-able-to-ping-vpnc/768758#768758)
After upgrading to Ubuntu 24.04 LTS, I'm unable with the same steps to
lower the MTU size.
In particular, if I run the following command from the terminal
sudo ifconfig your_tunnel_name mtu 1370 up
it seems to lower the MTU size.
However, the script under /etc/network/if-up.d is not automatically
triggered.
Does something change with the newer Ubuntu version?
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