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Florian Klink 822918df4c nixos/scripted-networking: use udev to configure link MACAddress and MTUBytes
The `network-link-${i.name}` units raced with other things trying to
configure the interface, or ran before the interface was available.

Instead of running our own set of shell scripts on boot, and hoping
they're executed at the right time, we can make use of udev to configure
the interface *while they appear*, by providing `.link` files in
/etc/systemd/network/*.link to set MACAddress and MTUBytes.

This doesn't require networkd to be enabled, and is populated properly
on non-networkd systems since
https://github.com/NixOS/nixpkgs/pull/82941.

This continues clean-up work done in
https://github.com/NixOS/nixpkgs/pull/85170 for the scripted networking
stack.

The only leftover part of the `network-link-${i.name}` unit (bringing
the interface up) is moved to the beginning of the
`network-addresses-${i.name}` unit.

Fixes: https://github.com/NixOS/nixpkgs/issues/74471
Closes: https://github.com/NixOS/nixpkgs/pull/87116
2020-05-22 10:58:00 +02:00
..
administration
configuration nixos/manual: document use of systemd to mount filesystems (#87684) 2020-05-14 18:00:01 +02:00
development treewide: use https for nixos.org and hydra.nixos.org 2020-05-03 22:14:21 -07:00
installation treewide: use https for nixos.org and hydra.nixos.org 2020-05-03 22:14:21 -07:00
release-notes nixos/scripted-networking: use udev to configure link MACAddress and MTUBytes 2020-05-22 10:58:00 +02:00
.gitignore
default.nix nixos manual: have a toc for each part and chapter 2019-10-30 10:25:09 +01:00
Makefile
man-configuration.xml
man-nixos-build-vms.xml
man-nixos-enter.xml
man-nixos-generate-config.xml
man-nixos-install.xml nixos-install: 'nix build' -> nix-build 2020-05-07 13:12:29 +02:00
man-nixos-option.xml Merge pull request #75439 from Ma27/submodule-fixes-for-nixos-option 2020-02-01 10:00:59 +01:00
man-nixos-rebuild.xml nixos-{rebuild,container}: Use flakeref#attrpath syntax 2020-02-05 23:15:18 +01:00
man-nixos-version.xml nixos-version: Add --json flag and show system.configurationRevision 2020-02-05 23:15:18 +01:00
man-pages.xml nixos/doc+manual: update copyright year range end 2019->2020 2020-01-14 07:01:39 -06:00
manual.xml nixos manual: move preface into own file 2019-10-30 10:25:09 +01:00
preface.xml nixos manual: refer to nix and nixpkgs manuals 2019-10-30 10:25:09 +01:00
README
shell.nix

To build the manual, you need Nix installed on your system (no need
for NixOS). To install Nix, follow the instructions at

    https://nixos.org/nix/download.html

When you have Nix on your system, in the root directory of the project
(i.e., `nixpkgs`), run:

    nix-build nixos/release.nix -A manual.x86_64-linux

When this command successfully finishes, it will tell you where the
manual got generated.