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This patch adds support to configure IPV6 hop limit.
For example:
/proc/sys/net/ipv6/conf/wlp3s0/hop_limit
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For now only deserialize some basic state and the applied addresses.
When a link is added, try to deserialize it's state from /run. This
is relevant only when networkd is restarted at runtime.
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Different tools use different terms for the same concept, let's try
to stick with 'priority', as that is what the netlink API uses.
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There are more than enough to deserve their own .c file, hence move them
over.
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string-util.[ch]
There are more than enough calls doing string manipulations to deserve
its own files, hence do something about it.
This patch also sorts the #include blocks of all files that needed to be
updated, according to the sorting suggestions from CODING_STYLE. Since
pretty much every file needs our string manipulation functions this
effectively means that most files have sorted #include blocks now.
Also touches a few unrelated include files.
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Every time the state is written out we may trigger third-party apps, so
let's be a bit more careful about writing this out unnecessarily.
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Configures Ipv6 Duplicate Address Detection.
10
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- Rely everywhere that we use abs() on the error code passed in anyway,
thus don't need to explicitly negate what we pass in
- Never attach synthetic error number information to log messages. Only
log about errors we *receive* with the error number we got there,
don't log any synthetic error, that don#t even propagate, but just eat
up.
- Be more careful with attaching exactly the error we get, instead of
errno or unrelated errors randomly.
- Fix one occasion where the error number and line number got swapped.
- Make sure we never tape over OOM issues, or inability to resolve
specifiers
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This patch support to configure the ipv6 acceprt ra option.
for more information see
http://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/proc-sys-net-ipv6..html
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If we have the data, emit it by default.
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For now, this is very simple and IP addresses have to be configured
manually.
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No functional changes, just moving definitions into separate header
files.
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This one is simply to add: encode the tzdata timezone in the DHCP
options and optionally make use of it.
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Also, we should only accept trailing dots where we have to, but not
everywhere, hence be more strict when validating configured hostnames.
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Rename the enum, the lookup functions and the parser for LLMNRSupport so
the type can be reused for mDNS.
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Manual merge of https://github.com/systemd/systemd/pull/751.
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All users are now setting lowercase=false.
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Tests are modified to check behaviour with relax and without relax.
New tests are added for hostname_cleanup().
Tests are moved a new file (test-hostname-util) because there's
now a bunch of them.
New parameter is not used anywhere, except in tests, so there should
be no observable change.
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This patch add support for macvtap.
see http://virt.kernelnewbies.org/MacVTap
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Justification is similar to BPDUGuard rename. "Positive" values
are easier. This is a rather uncommon option, so using a slightly
longer name should not be a problem, and may in fact may make it
easier to guess what the option does without reading the
documentation.
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Looking at the kernel commit, "on" seems to be the default value:
commit 867a59436fc35593ae0e0efcd56cc6d2f8506586
Author: Vlad Yasevich <vyasevic@redhat.com>
Date: Wed Jun 5 10:08:01 2013 -0400
bridge: Add a flag to control unicast packet flood.
Add a flag to control flood of unicast traffic. By default, flood is
on and the bridge will flood unicast traffic if it doesn't know
the destination. When the flag is turned off, unicast traffic
without an FDB will not be forwarded to the specified port.
... and it seems to be the reasonable thing to do by default.
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Rename to follow the follow the style of other options.
In general "positive" options are preferred to "negative" ones,
because they are easier to describe and easier for humans to
parse (c.f. the shortening on the man page entry).
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This patch enhances the DHCP client to send the hostname
reference
http://lists.freedesktop.org/archives/systemd-devel/2014-July/021550.html
Tested with
Example conf:
[Match]
Name=eth1
[Network]
DHCP=v4
[DHCP]
SendHostname=true
Hostname=test
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- Make sure that the IPv6PrivacyExtensions=yes results in
prefer-temporary, not prefer-public.
- Introduce special enum value "kernel" to leave setting unset, similar
how we have it for the IP forwarding settings.
- Bring the enum values in sync with the the strings we parse for them,
to the level this makes sense (specifically, rename "disabled" to
"no", and "prefer-temporary" to "yes").
- Make sure we really set the value to to "no" by default, the way it is
already documented in the man page.
- Fix whitespace error.
- Make sure link_ipv6_privacy_extensions() actually returns the correct
enum type, rather than implicitly casting it to "bool".
- properly size formatting buffer for ipv6 sysctl value
- Don't complain if /proc/sys isn't writable
- Document that the enum follows the kernel's own values (0 = off, 1 =
prefer-public, 2 = prefer-temporary)
- Drop redundant negating of error code passed to log_syntax()
- Manpage fixes
This fixes a number of issues from PR #417
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This patch add support for ipv6 privacy extensions.
The variable /proc/sys/net/ipv6/conf/<if>/use_tempaddr
can be changed via the boolean
IPv6PrivacyExtensions=[yes/no/prefer-temporary]
When true enables privacy extensions, but prefer public addresses over
temporary addresses.
prefer-temporary prefers temporary adresses over public addresses.
Defaults to false.
[Match]
Name=enp0s25
[Network]
IPv6PrivacyExtensions=prefer-temporary
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In 5a8bcb674f71a20e95df55319b34c556638378ce, IPForwarding was introduced
to set forwarding flags on interfaces in .network files. networkd sets
forwarding options regardless of the previous setting, even if it was
set by e.g. sysctl. This commit creates a new option for IPForwarding,
"kernel", that preserves the sysctl settings rather than always setting
them.
See https://bugs.freedesktop.org/show_bug.cgi?id=89509 for the initial
bug report.
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dhcp domain option
previously hostname_is_valid was used to validate domain names, which
would silently drop perfectly valid dns names that were longer than a
single dns label.
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In containers we never have udev devices, so drop the assert.
This fixes an assertion introduced in af3aa302741b6edb0729925febb5f8bc26721fe3.
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This patch add support to create vti6 tunnel
test:
vt6.network
[Match]
Name=wlan0
[Network]
Tunnel=ip6vti
vti6.netdev
[NetDev]
Name=ip6vti
Kind=vti6
[Tunnel]
Local=2a00:ffde:4567:edde::4987
Remote=2001:473:fece:cafe::5179
ip link
11: ip6_vti0@NONE: <NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT
group default
link/tunnel6 :: brd ::
12: ip6vti@wlan0: <POINTOPOINT,NOARP> mtu 1500 qdisc noop state DOWN
mode DEFAULT group default
link/tunnel6 2a00:ffde:4567:edde::4987 peer 2001:473:fece:cafe::5179
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This makes adds a couple of fixes:
- Introduces log_netdev_error_errno() and friends, which takes an error
number, and matches what log_link_error_errno() and friends do.
- Replaces a lof ot strerror() usage with log_netdev_error_errno(),
log_link_error_errno() and log_erro_errno()
- Uppercases the first character of many log messages, after all this is
supposed to be english language
- Drops manual negating of error codes before passing them to log
functions, the log functions all do that internally anyway.
Some other minor fixes.
Behaviour should not change really.
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We were using a space more often than not, and this way is
codified in CODING_STYLE.
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Introduce BindCarrier= to indicate the set of links that determine if
the current link should be brought UP or DOWN.
[tomegun: add a bit to commit message]
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This patch removes includes that are not used. The removals were found with
include-what-you-use which checks if any of the symbols from a header is
in use.
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Too generic name.
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Match{Name,OrginalName,Type,Driver,Path} can now take a space-separated glob of matches.
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This allows the admin to set the host-specific part of IPv6 addresses, but still
receive the prefix via SLAAC.
.network file snippet:
[Network]
IPv6Token=::12
gives:
$ ip token
token ::12 dev eth0
This closes https://bugs.freedesktop.org/show_bug.cgi?id=81177.
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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.
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