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Add a function that creates a UDP socket bound to the given interface
and optionally to an IPv6 address. Add another function that will
send the DHCPv6 UDP packet to its destination.
Using IPV6_PKTINFO in setsockopt to bind the IPv6 socket to an
interface is documented in section 4. of RFC 3542, "Advanced Sockets
Application Program Interface (API) for IPv6"
Add a define for DHCPv6 Relay Agents and Servers multicast address as
its not available elsewhere.
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Add option appending and parsing. DHCPv6 options are not aligned, thus
the option handling code must be able to handle options starting at
any byte boundary.
Add a test case for the basic option handling.
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Add the core of DHCPv6 client message retransmission and upper bound
timer and message count handling according to RFC 3315 Secions 7.1.2
and 14. Omit the DHCPv6 initial delay; for now it is assumed that
systemd-networkd will provide decent startup randomization that will
desynchronize the clients.
When reinitializing the client, clear all timers.
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Add test cases for basic DHCPv6 client handling, e.g. setting
interface index, mac address and attaching event loop.
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Create structures describing Identity Association IDentifiers and
IPv6 lease addresses.
[tomegun: initialize the IAID when client is started. Base this off of the
predictable udev names, if available, as these satisfy the requirement of
the IAID, and base it off the mac addres otherwise, as that is the best we
have.]
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Initialize DHCP Unique Identifier when creating the client. The
DUID is generated based on the machine-id, which satisfies all the
requirements of what an DUID should be. The DUID type is DUID-EN.
Based on patch by Patrik Flykt.
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Feed a Router Advertisement to the code and expect proper events
each time. The sending part is ignored, as all of it is static code
in the real dhcp_network_icmp6_send_rs() function.
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Provide functions to bind the ICMPv6 socket to the approriate interface
and set multicast sending and receiving according to RFC 3493, section
5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages
except Router Advertisements for the socket in question according to
RFC 3542, section 3.2.
Send Router Solicitations to the all routers multicast group as
described in RFC 4861, section 6. and act on the received Router
Advertisments according to section 6.3.7.
Implement a similar API for ICMPv6 handling as is done for DHCPv4 and
DHCPv6.
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Add initial structure definition and functions for setting index, MAC
address, callback and event loop. Define protocol values and states.
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Drop the "systemd-" prefix, renaming it from "systemd-coredumpctl" to
"coredumpctl".
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Now that we actually can distuingish system and normal users there's no
point in taking session information into account anymore when splitting
up logs.
This has the beenfit with that coredump information will actually end up
in each user's own journal.
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only
"coredumpctl info -1" is now incredibly useful for showing the most recent
stacktrace.
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elfutils' libdw is maintained, can read DWARF debug data and appears to
be the library of choice for generating backtraces today.
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since 376cd3b89c62f580a6f576cecfbbb28d3944118f LIST_FIND_TAIL accepts
an empty list. That removed an assert in LIST_FIND_TAIL and we now
theoretically risk a null pointer deref. This adds the assert directly
to protect against that.
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about a coredump
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Introduce a new configuration file /etc/systemd/coredump.conf to
configure when to place coredumps in the journal and when on disk.
Since the coredumps are quite large, default to storing them only on
disk.
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No need to use HASHMAP_ITERATE when we destruct all entries anyway.
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We must use free instead of dhcp_lease_free here to avoid freeing
client_id.data.
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address on the interface
This way we can make use of the addresses of the IP pool.
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When an address is configured to be all zeroes, networkd will now
automatically find a locally unused network of the right size from a
list of pre-configured pools. Currently those pools are 10.0.0.0/8,
172.16.0.0/12, 192.168.0.0/16 and fc00::/7, i.e. the network ranges for
private networks. They are compiled in, but should be configurable
eventually.
This allows applying the same configuration to a large number of
interfaces with each time a different IP range block, and management of
these IP ranges is fully automatic.
When allocating an address range from the pool it is made sure the range
is not used otherwise.
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of it everywhere
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There is no need to explicitly check version of L3 protocol in the
ethernet header because we bind socket with .sll_protocol set to
ETH_P_IP, thus we only receive IPv4 packets on the socket.
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make sure they are started before and stopped after any LUKS setup
https://bugzilla.redhat.com/show_bug.cgi?id=1097938
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creating them first, and relabeling them afterwards
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https://bugzilla.redhat.com/show_bug.cgi?id=1081429
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