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Previously, if IPv4 ACD is enabled on an address, then we first
assign the address, and start sd-ipv4acd daemon for the address.
This is not only RFC incompliant, but also the address is always
dropped, as the daemon always considers the address is conflicted.
This commit makes networkd first starts sd-ipv4acd daemon to probe
the address, and then the address is configured if no conflict is
detected.
Fixes#17235.
Currently, networkd does not set tentative flag on create, and kernel
ignore the flag on remove. So, this commit does not change any current
behaviour. This is just a preparation for later commits.
See RFC 5227 section 2.1.1.
This introduces a callback which intend to a library user, e.g.
networkd, checks whether the sender hardware address is a MAC address of
the host's intrerface or not.
This graphic chip doesn't have a DRM driver and fallback to vesa-framebuffer
driver.
Without this patch, users of such chip suddenly see their GUI broken without
any indication or reason of what happened (no error message). Hence this
regression is near to impossible to troubleshoot for end users.
Add ip protocol token to SocketBind{Allow|Deny}= property parser.
Use parse_socket_bind_item helper.
Replace int32_t with int in cgroup item for socket-bind as it was
requested in [0].
Update tests.
[0] https://github.com/systemd/systemd/pull/19942#discussion_r652150024
Parse address family, ip protocol and ports, any of them can be
optional. If neither is specified, a special value 'any' is expected.
Helper is placed in shared to be reused in both fragment and dbus.
Add unit tests with valid and invalid examples.
Thin wrappers of ip_protocol_{from|to}_name targeting IPPROTO_TCP and
IPPROTO_UDP only.
Used to parse IP protocol configuration restricted only to TCP and UDP,
e.g. in SocketBind{Allow|Deny}= unit property.
These helpers are inspired by af_{from|to}_ipv4_ipv6 and potentially
extendable with other IP protocols if there is a use-case to expose
them.
Lookup ip protocol in a socket address to allow or deny binding a socket
to the address.
Matching rule is extended with 'protocol' field. If its value is 0
(IPPROTO_IP) ip protocol comparison is omitted and matching is passed to
the next token which is ip ports.
Documentation is updated.
dns_resource_record_copy() assumes that NSEC types bitmap is non-empty
which results in a null pointer dereference inside bitmap_copy() in some
cases. Fix this by calling bitmap_copy() conditionally.
