systemd-stable/network/80-container-vz.network

#  SPDX-License-Identifier: LGPL-2.1-or-later
#
#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.

# This network file matches the bridge interface created by systemd-nspawn's
# --network-zone= switch. See systemd-nspawn(1) for details.

[Match]
Name=vz-*
Driver=bridge

[Network]
# Default to using a /24 prefix, giving up to 253 addresses per virtual network.
Address=0.0.0.0/24
LinkLocalAddressing=yes
DHCPServer=yes
IPMasquerade=yes
LLDP=yes
EmitLLDP=customer-bridge
IPv6SendRA=yes
license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 07:23:58 +03:00			`# SPDX-License-Identifier: LGPL-2.1-or-later`
Add SPDX license headers to various assorted files 2017-11-18 20:18:16 +03:00			`#`
network: add automatic configuration for the networks created by nspawn --network-zone= This way, they "just work", similar to --network-veth behaves, as long as networkd is enabled and running on all involved nodes. 2016-05-06 22:03:40 +03:00			`# This file is part of systemd.`
			`#`
			`# systemd is free software; you can redistribute it and/or modify it`
			`# under the terms of the GNU Lesser General Public License as published by`
			`# the Free Software Foundation; either version 2.1 of the License, or`
			`# (at your option) any later version.`

			`# This network file matches the bridge interface created by systemd-nspawn's`
			`# --network-zone= switch. See systemd-nspawn(1) for details.`

			`[Match]`
			`Name=vz-*`
			`Driver=bridge`

			`[Network]`
			`# Default to using a /24 prefix, giving up to 253 addresses per virtual network.`
			`Address=0.0.0.0/24`
			`LinkLocalAddressing=yes`
			`DHCPServer=yes`
			`IPMasquerade=yes`
			`LLDP=yes`
network: allow LLDP packets to cross non-customer bridges for container network interfaces This changes the default .network files we ship for nspawn containers to set EmitLLDP=customer-bridge in order to allow propagation of the LLDP packets across bridges. This is useful so that "networkctl status" shows all peers connected to a virtual container network, collecting this data via LLDP. This is safe since the default configuration for these interfaces does not bridge these links to external interfaces, but relies on IP routing for this. 2016-05-06 23:44:13 +03:00			`EmitLLDP=customer-bridge`
networkd: Enable IPv6SendRA on builtin network files RAs trigger neighbor discovery which allows users to query the LL address of the container/VM via `ip neighbor get dev`. This is useful as it gives users an easy way to connect to the container without needing LLMNR or mDNS to resolve the hostname of the container to an IP address. In practice, this allows connecting with only networkd enabled and without resolved running in the host/container. 2020-12-26 17:27:55 +03:00			`IPv6SendRA=yes`