更新：这似乎是我的主机提供商 (1blu) 的问题。在我的本地计算机和其他服务器（不同的主机提供商）上加载模块非常顺利。
我无法在 Ubuntu 20.04 上使 wireguard 工作。我认为我的主要问题是未加载 wireguard 模块。当我加载时，modprobe wireguard我得到：
modprobe: FATAL: Module wireguard not found in directory /lib/modules/5.4.0
该错误消息是有道理的，因为 wireguard 模块已经构建为/lib/modules/5.4.0-77-generic/updates/dkms/wireguard.ko
$ find / -iname "*wireguard.ko*"
/lib/modules/5.4.0-77-generic/updates/dkms/wireguard.ko
我执行的时候也对下面的错误信息感到很疑惑lsmod | grep wireguard，不知道是否和wireguard有关：
libkmod: ERROR ../libkmod/libkmod-module.c:1941 kmod_module_get_holders: could not open '/sys/module/crct10dif_pclmul/holders': No such file or directory
我该怎么做才能加载 wireguard 模块？
以下是一些可能相关的信息：
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS
Release: 20.04
Codename: focal
$ uname -a
Linux mysecrethostname 5.4.0 #1 SMP Mon Dec 9 19:36:21 MSK 2019 x86_64 x86_64 x86_64 GNU/Linux
已安装 linux-headers 软件包: linux-headers-5.4.0-77, linux-headers-5.4.0-77-generic,linux-headers-generic
Wireguard 版本：
wireguard 1.0.20200513-1~20.04.2
wireguard-dkms 1.0.20201112-1~20.04.1
wireguard-tools 1.0.20200513-1~20.04.2
模块构建日志：
-------- Uninstall Beginning --------
Module: wireguard
Version: 1.0.20201112
Kernel: 5.4.0-77-generic (x86_64)
-------------------------------------
Status: Before uninstall, this module version was ACTIVE on this kernel.
wireguard.ko:
- Uninstallation
- Deleting from: /lib/modules/5.4.0-77-generic/updates/dkms/
- Original module
- No original module was found for this module on this kernel.
- Use the dkms install command to reinstall any previous module version.
depmod...
DKMS: uninstall completed.
------------------------------
Deleting module version: 1.0.20201112
completely from the DKMS tree.
------------------------------
Done.
Loading new wireguard-1.0.20201112 DKMS files...
It is likely that 5.4.0 belongs to a chroot's host
Building for 5.4.0 and 5.4.0-77-generic
Module build for kernel 5.4.0 was skipped since the
kernel headers for this kernel does not seem to be installed.
Building initial module for 5.4.0-77-generic
Done.
wireguard.ko:
Running module version sanity check.
- Original module
- No original module exists within this kernel
- Installation
- Installing to /lib/modules/5.4.0-77-generic/updates/dkms/
depmod...
DKMS: install completed.