WireGuard: "Error: Unknown device type" on Archlinux

Do you also have the following problem after installing wireguard-tools and wireguard-arch?

[root@test ~]# ip link add dev wg0 type wireguard
Error: Unknown device type.

No, you didn't do anything wrong! Yes, that's the right way to install WireGuard on Arch! So why isn't it working? The fix is pretty simple: Update your fucking system!

[root@test ~]# pacman -Syu   
:: Synchronizing package databases...   
 core is up to date   
 extra is up to date   
 community is up to date   
:: Starting full system upgrade...   
resolving dependencies...   
looking for conflicting packages...   

Packages (147) acl-2.2.53-2  archlinux-keyring-20191018-2  argon2-20190702-2  attr-2.4.48-2  audit-2.8.5-6  bash-5.0.011-2  btrfs-progs-5.3.1-3  bzip2-1.0.8-3
               ca-certificates-20181109-2  ca-certificates-mozilla-3.47.1-1  ca-certificates-utils-20181109-2  coreutils-8.31-3  cracklib-2.9.7-2  cryptsetup-2.2.2-1  curl-7.67.0-3
               db-5.3.28-5  dbus-1.12.16-3  device-mapper-2.02.186-3  dhcpcd-8.1.2-1  diffutils-3.7-3  dnssec-anchors-20190629-2  e2fsprogs-1.45.4-2  expat-2.2.9-2  file-5.37-4
               filesystem-2019.10-2  findutils-4.7.0-2  gawk-5.0.1-2  gcc-libs-9.2.0-4  gdbm-1.18.1-3  gettext-0.20.1-3  glib2-2.62.3-1  glibc-2.30-3  gmp-6.1.2-3  gnupg-2.2.18-1
               gnutls-3.6.10-2  gpgme-1.13.1-3  grep-3.3-3  groff-1.22.4-2  grub-2:2.04-3  gzip-1.10-3  haveged-1.9.8-1  hwids-20191025-2  iana-etc-20191123-1  icu-65.1-2
               inetutils-1.9.4-8  iproute2-5.4.0-1  iptables-1:1.8.3-3  iputils-20190709-2  jfsutils-1.1.15-7  json-c-0.13.1-3  kbd-2.2.0-5  keyutils-1.6.1-3  kmod-26-3
               krb5-1.17-2  ldns-1.7.1-2  less-551-3  libaio-0.3.112-2  libarchive-3.4.0-3  libassuan-2.5.3-2  libcap-2.27-2  libcap-ng-0.7.9-2  libedit-20191025_3.1-1
               libelf-0.177-2  libffi-3.2.1-4  libgcrypt-1.8.5-2  libgpg-error-1.36-3  libidn2-2.3.0-1  libksba-1.3.5-2  libldap-2.4.48-2  libmnl-1.0.4-3  libnftnl-1.1.4-2
               libnghttp2-1.39.2-2  libnl-3.5.0-2  libpcap-1.9.1-2  libpipeline-1.5.1-2  libpsl-0.21.0-2  libsasl-2.1.27-2  libseccomp-2.4.1-3  libsecret-0.19.1-2  libssh2-1.9.0-2
               libtasn1-4.15.0-1  libtirpc-1.1.4-2  libunistring-0.9.10-2  libusb-1.0.23-2  libutil-linux-2.34-8  libxml2-2.9.10-1  licenses-20191011-2  linux-5.3.13.1-1
               linux-api-headers-5.3.1-2  linux-firmware-20191022.2b016af-3  logrotate-3.15.1-2  lvm2-2.02.186-3  lz4-1:1.9.2-2  lzo-2.10-3  man-db-2.9.0-1  man-pages-5.04-1
               mdadm-4.1-2  mkinitcpio-27-2  mkinitcpio-busybox-1.30.1-2  mpfr-4.0.2-2  nano-4.5-2  ncurses-6.1-7  netctl-1.20-2  nettle-3.5.1-2  npth-1.6-2  openresolv-3.9.2-2
               openssh-8.1p1-2  openssl-1.1.1.d-2  p11-kit-0.23.18.1-2  pacman-5.2.1-1  pacman-mirrorlist-20191001-2  pam-1.3.1-2  pambase-20190105.1-2  pciutils-3.6.2-2
               pcre-8.43-2  pcre2-10.34-1  perl-5.30.1-1  pinentry-1.1.0-5  polkit-0.116-3  popt-1.16-12  procps-ng-3.3.15-2  psmisc-23.3-2  readline-8.0.001-2
               reiserfsprogs-3.6.27-3  s-nail-14.9.15-2  sed-4.7-3  shadow-4.7-3  sqlite-3.30.1-2  sudo-1.8.29-1  sysfsutils-2.1.0-11  systemd-243.162-2  systemd-libs-243.162-2
               systemd-sysvcompat-243.162-2  tar-1.32-3  texinfo-6.7-2  thin-provisioning-tools-0.8.5-3  tzdata-2019c-3  usbutils-012-2  util-linux-2.34-8  vi-1:070224-4
               virtualbox-guest-modules-arch-6.0.14-9  virtualbox-guest-utils-nox-6.0.14-4  which-2.21-5  xfsprogs-5.2.1-3  xz-5.2.4-2  zlib-1:1.2.11-4  zstd-1.4.3-2

Total Download Size:    291.82 MiB   
Total Installed Size:  1179.24 MiB   
Net Upgrade Size:        26.89 MiB   

I've wasted a full hour on this! Soon it will be native in the linux kernel!


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