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We are only guaranteed to stay in ENSLAVING state whilst enslaving by bridges/bonds, not
when adding stacked devices (as then the underlying device can be IFF_UP'ed and configured
in parallel), so drop these asserts.
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https://bugs.freedesktop.org/show_bug.cgi?id=82721
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ones later
This is primarily important for the domains list, as we really should
prefer the locally configured domain over the dhcp supplied ones when we
use it as a search list.
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This allows the search/routing domanis to be specified per link/network and be passed
on to resolved.
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This option will also apply to the search domains, so make it plural.
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For now this only exposes the domain name (DHCP Option 15), and not
the search string (DHCP Option 119), which will be implemented in
a follow-up patch.
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This should help in debugging issues with DHCP lease renewal.
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Suggested by Lennart and Kay.
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This is the state when we are waiting for udev to initialize the device, and waiting for
libudev and rtnl to be in sync. In the future we probably will also be waiting for nl80211.
At this point we do not yet have enough information to know whether or not networkd should
be handling the device.
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configured implicit
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a bit
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Primarily, this means we get rid of net_parse_inaddr(), and replace it
everywhere with in_addr_from_string() and in_addr_from_string_auto().
These functions do not clobber the callers arguments on failure, which
is more close to our usual coding style.
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For now we simply take these values from the server's address.
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And inform the DHCPv4 clients about it.
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libudev now does set errno correctly, so we can indeed rely on this.
This reverts commit 2b49732c3d511007ae2c413997e56c40f678d79a.
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This reverts 6f4d55a8ae04e344a41fc2adef12ad99c2bb2927, as we cannot rely on errno here.
Reported by David Herrmann.
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Reported by Raimonds Cicans <ray@apollo.lv>
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This changes the behavior when both DHCPv4 and IPv4LL are enabled. Before,
we would disable IPv4LL when we got a DHCPv4 lease and enable it if the
lease was lost.
Now we just always set up both, if both are enabled, but the DHCPv4
addresses and routes will always take precedence due to their metric
and scope.
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addresses are link-local or not
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The return value may be -EINVAL or a positive errno from the dbus
message. Check both ranges, otherwise most errors are silently ignored.
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Keep this internal to the client and simply restart it when NAK is receieved, as
per the RFC.
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In the state files, do not distinguish where the various entries came from
(static or DHCP), but include them all in the same list.
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All routes added by networkd are currently set RTPROT_BOOT, which according
to the kernel means "Route installed during boot" (rtnetlink.h). But this
is not always the case as networkd changes routing after boot too. Since
the kernel gives more detailed protocols, use them.
With this patch, user-configured static routes now use RTPROT_STATIC (which
they are) and DHCP routes use RTPROT_DHCP. There is no define for IPv4LL
yet, so those are installed as RTPROT_STATIC (though perhaps RTPROT_RA is
better?).
[tomegun: fixup
src/network/networkd-link.c:972:33: error: too few arguments to function 'route_new_dynamic']
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Similarly to how unit types work.
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Do not expose link_is_loopback, people should just get this from rtnl directly.
Do not expose NTP servers as IP addresses, these must be strings.
Expose ifindex as int, not unsigned. This is what the kernel (mostly) and glibc uses.
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arrays
As long as the number of array entries is relatively small it's nicer to
simply return the number of entries directly, instead of using a size_t*
return parameter for it.
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It appears there is no good way to decide whether or not broadcasts should be enabled,
there is hardware that must have broadcast, and there are networks that only allow
unicast. So we give up and make this configurable.
By default, unicast is used, but if the kernel were to inform us abotu certain
interfaces requiring broadcast, we could change this to opt-in by default in
those cases.
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Make link_initialized() idempotent to avoid taking refs on several udev_device
objects.
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Split each netdev kind into its own .h/.c.
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Enslave only really makes sense when referring to bridges and bonds, so try to be
a bit more neutral.
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Vendor Class Identifier be used by DHCP clients to identify
their vendor type and configuration. When using this option,
vendors can define their own specific identifier values, such
as to convey a particular hardware or operating system
configuration or other identifying information.
Vendor-specified DHCP options—features that let administrators assign
separate options to clients with similar configuration requirements.
For example, if DHCP-aware clients for example we want to separate
different gateway and option for different set of people
(dev/test/hr/finance) in a org or devices for example web/database
servers or let's say in a embedded device etc and require a different
default gateway or DNS server than the rest of clients.
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When doing a NEWADDR, the reply we get back is the NEWADDR itself, rather
than just an empty ack (unlike how NEWLINK works). For this reason, the
process that did the NEWADDR does not get the broadcast message.
We were only listening for broadcast messages, and hence not tracking the
addresses we added ourselves. This went unnoticed as the kernel will usually
send NEWADDR messages from time to time anyway, so things would mostly work,
but in the worst case we would not notice that a routable address was available
and consider ourselves offline.
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Keeping the refcounting next to the sd_bus_call_async() makes it easier to check.
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