** Description changed:
On 24.04, with the 6.17 kernel, trying to create a FAN bridge fails if
the `vxlan` module is not already loaded.
# Reproducer
Initial setup:
$ lxc launch ubuntu-minimal-daily:24.04 noble1 --vm
$ lxc shell noble1
root@noble1:~# apt-get update
root@noble1:~# apt-get install -y linux-image-virtual-hwe-24.04
root@noble1:~# reboot
$ lxc shell noble1
root@noble1:~# lsmod| grep vxlan # make sure its not loaded
Try to create a FAN bridge:
- root@noble1:~# CIDR="$(ip route get 8.8.8.8 | awk '{print $3}' | cut -d.
-f-3)/24"
+ root@noble1:~# CIDR="$(ip route get 8.8.8.8 | awk '{print $3}' | cut -d.
-f-3).0/24"
root@noble1:~# ip link add name fan0 type vxlan id 15728640 dev enp5s0 local
0.0.0.0 dstport 0 fan-map "240.0.0.0/8:${CIDR}"
info: Using default fan map value (33)
Error: binary attribute size out of range.
Didn't work but `vxlan` was loaded, try again:
root@noble1:~# ip link add name fan0 type vxlan id 15728640 dev enp5s0
local 0.0.0.0 dstport 0 fan-map "240.0.0.0/8:${CIDR}"
That worked but ideally, the `vxlan` module should be autoloaded as it
is when using the 6.8 kernel.
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https://bugs.launchpad.net/bugs/2141703
Title:
vxlan module not loaded automatically when creating FAN bridges on
Noble HWE kernel
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