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Commit Graph

19 Commits

Author SHA1 Message Date
Lennart Poettering
658169e6d3 network: take explicit ownership of our own interfaces
This is a follow-up for #30786 and uses it to assign
ID_NET_MANAGED_BY=io.systemd.Network to all all network interfaces that
we consider ours to manage. This should hopefully have the effect that
other well-behaving managers won't fight for these devices.

This doesn't bother with network interfaces we match inside containers,
since udev is not available there anyway.
2024-01-10 19:56:43 +00:00
Yu Watanabe
f139393dd2 network: use Kind= instead of Driver=
networkd ignores errors in reading driver through ethtool. The kind of
network interface is retrieved through netlink, and networkd checks
checks many failures. So, using Kind= should be safer.

No functional change, just for safety.
2023-11-08 22:59:57 +09:00
Yu Watanabe
71164ee9fe network: disable IPv6AcceptRA= in several default config
Also,
- drop DHCP=no, as it is the default setting,
- enable IPv6SendRA= for wifi access point,
- enable MulticastDNS= for wifi adhoc mode.
2023-11-03 11:41:52 +09:00
Zbigniew Jędrzejewski-Szmek
3fe96b6c32 network: change license of examples to MIT-0
Arguably, CC0 is just fine for examples since they are not code. But it's
easier to be consistent and just use MIT-0 for all "documentation". Thus,
the license is changed similarly code examples under man/.

Based on 'git shortlog -ns network/*' and 'git log -p', the following folks
should ack this:
  Zbigniew Jędrzejewski-Szmek
  Lennart Poettering
  Tom Gundersen
  Yu Watanabe
  Daan De Meyer
  Marc-André Lureau
2022-10-26 08:39:34 +02:00
Zbigniew Jędrzejewski-Szmek
418e1f2892 network: license all config files as CC0
Same justification as the previous commit.

$ for i in network/*-*; do git blame $i;done | less
shows that those files were written by Tom Gundersen, Lennart Poettering, Yu
Watanabe, me, and Marc-André Lureau.
2022-01-12 16:05:59 +01:00
Yu Watanabe
6cde5b4b1c network: use IPMasquerade=both instead of yes
Follow-up for 4c72d851cd.
2021-02-24 15:01:43 +01:00
Daan De Meyer
2ec6191c38 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.
2021-01-06 20:00:49 +01:00
Yu Watanabe
db9ecf0501 license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
Zbigniew Jędrzejewski-Szmek
d9215cd838 Add SPDX license headers to various assorted files 2017-11-19 19:08:15 +01:00
Lennart Poettering
bbc0c09448 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.
2016-05-09 15:45:31 +02:00
Lennart Poettering
3af18d8eab 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.
2016-05-09 15:45:31 +02:00
Lennart Poettering
2a5a6e05ca network: turn on LLDP tx+rx for the default container network configuration
Containers are relatively trusted and the veth tunnels are small networks,
hence let's turn on LLDP both ways for them.
2016-02-21 20:58:59 +01:00
David Herrmann
0737984f69 network: fix 'LinkLocal' -> 'LinkLocalAddressing' in network files
'LinkLocal' was renamed to 'LinkLocalAddressing' in:

    commit 56fd6bf795
    Author: Tom Gundersen <teg@jklm.no>
    Date:   Sat Feb 14 00:32:26 2015 +0100

        networkd: .network - rename LinkLocal to LinkLocalAddressing

..but apparently the network files were not updated. Fix this.
2015-02-14 15:31:26 +01:00
Tom Gundersen
d0d6a4cd70 networkd: generalize IPv4LL to LinkLocal
This allows both IPv4 and IPv6 link-local addresses to be enabled or disabled. By default
we still enable IPv6LL and disable IPv4LL. The old config option is kept for backwards
compatibility, but removed from the documentation.
2015-02-09 12:20:10 +01:00
Lennart Poettering
db9fd84944 network: IPMasquerade= implies IPForward=, hence remove it 2015-01-13 20:17:07 +01:00
Tom Gundersen
2f6379a9ac doc: network - add comment about default prefix size
Should hopefully make it clear that this is not some magic value, just the default we picked.

Suggested by Jan Engelhardt.
2015-01-13 18:23:59 +01:00
Lennart Poettering
5a8bcb674f networkd: add minimal IP forwarding and masquerading support to .network files
This adds two new settings to networkd's .network files:
IPForwarding=yes and IPMasquerade=yes. The former controls the
"forwarding" sysctl setting of the interface, thus controlling whether
IP forwarding shall be enabled on the specific interface. The latter
controls whether a firewall rule shall be installed that exposes traffic
coming from the interface as coming from the local host to all other
interfaces.

This also enables both options by default for container network
interfaces, thus making "systemd-nspawn --network-veth" have network
connectivity out of the box.
2015-01-13 13:55:15 +01:00
Lennart Poettering
7826397d92 network: automatically assign each container veth link a /28 IP address range 2014-06-18 18:28:29 +02:00
Lennart Poettering
4eaea66423 network: always take possession of host side of nspawn veth tunnels and do IPv4LL on them 2014-05-18 20:52:49 +09:00