This is an attempt to clean up the POP3/SMTP/LPR/… DHCP lease server
data logic in networkd. This reduces code duplication and fixes a number
of bugs.
This removes any support for collecting POP3/SMPT/LPR servers acquired
via local DHCP client releases since noone uses that, and given how old
these protocols are I doubt this will change. It keeps support for
configuring them for the dhcp server however.
The differences between the DNS/NTP/SIP/POP3/SMTP/LPR configuration
logics are minimized.
This removes the relevant symbols from sd-network.h (which is an
internal API only at this point after all).
This is unfortunately not well test, given the old code for this had
barely any tests. But the new code should not perform worse at least,
and allow us to release, since it corrects some interfaces visible in
the .network configuration format.
Fixes: #15943
To make Driver= in [Match] section work in containers.
Note that ID_NET_DRIVER= property in udev database is set with the
result of the ethtool. So, this should not change anything for
non-container cases.
Closes#15678.
In DHCPv6-PD environment, where WAN interface requests IPv6 via DHCPv6,
receives the address as well as delegated prefixes, with LAN interfaces
serving those delegated prefixes in their router advertisement messages.
The LAN interfaces on the router themselves do not have
the IPv6 addresses assigned by networkd from the prefix it
serves on that interface. Now this patch enables it.
Defines how link-local and autoconf addresses are generated.
0: generate address based on EUI64 (default)
1: do no generate a link-local address, use EUI64 for addresses generated
from autoconf
2: generate stable privacy addresses, using the secret from
stable_secret (RFC7217)
3: generate stable privacy addresses, using a random secret if unset
Similar to the link->setting_mtu flag, this delays continued configuration
until after the genmode has been successfully set; this is important
because we do not want networkd to raise the interface before the genmode
has been set, as if we're disabling the genmode, raising the interface
before we have successfully disabled the genmode will result in the kernel
creating a ipv6ll address, even though we don't want that.
The kernel resets the ipv6 mtu after NETDEV_UP or NETDEV_CHANGEMTU event,
so we must reset the ipv6 mtu to our configured value after we detect
IFF_UP flag set or after we set the device mtu.
Fixes: #13914.
When nspawn container with private network starts, networkd creates
the default route for the interface. The route may cause problem on
the host side, and it can be created with DefaultRouteOnDevice= now.
Hence, this makes networkd not create the route implicitly any more.
Closes#13418.
*We* control the sysctl setting. If the user configured IPv6, then we apply the
settings, and just make sure that at some point during the configuration the
sysctl is disabled (i.e. ipv6 enabled) if we have IPv6 configured.
Replaces #13283.
It seems that old kernels do not support prefix routes with
non-default route tables. This adds a fallback logic when adding route
fails. In that case, prefix route is created by kernel and the default
route table is used.
The flag IFA_F_NOPREFIXROUTE was introduced in kernel-3.14. But even if
the kernel does not support the flag, it should be just ignored. So, it
is not necessary to do the fallback logic. Moreover, the current logic
is not a fallback mechanism but just retrying. So, it should not work.
Let's drop that.
The function sd_radv_add_prefix() in dhcp6_pd_prefix_assign() may
return -EEXIST, and in that case the sd_radv_prefix object allocated
in dhcp6_pd_prefix_assign() will be freed when the function returns.
Hence, the key value in Manager::dhcp6_prefixes hashmap is lost.
We not stopping the clients when networkd stops. They
should shut down cleanly and then we need to clean the DS.
One of requirements to implement
https://github.com/systemd/systemd/issues/10820.
```
^CBus bus-api-network: changing state RUNNING → CLOSED
DHCP SERVER: UNREF
DHCP SERVER: STOPPED
DHCP CLIENT (0x60943df0): STOPPED
veth-test: DHCP lease lost
veth-test: Removing address 192.168.5.31
NDISC: Stopping IPv6 Router Solicitation client
DHCP CLIENT (0x0): FREE
==24308==
==24308== HEAP SUMMARY:
==24308== in use at exit: 8,192 bytes in 2 blocks
==24308== total heap usage: 4,230 allocs, 4,228 frees, 1,209,732 bytes allocated
==24308==
==24308== LEAK SUMMARY:
==24308== definitely lost: 0 bytes in 0 blocks
==24308== indirectly lost: 0 bytes in 0 blocks
==24308== possibly lost: 0 bytes in 0 blocks
==24308== still reachable: 8,192 bytes in 2 blocks
==24308== suppressed: 0 bytes in 0 blocks
==24308== Rerun with --leak-check=full to see details of leaked memory
==24308==
==24308== For lists of detected and suppressed errors, rerun with: -s
==24308== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
==24308== could not unlink /tmp/vgdb-pipe-from-vgdb-to-24308-by-sus-on-Zeus
==24308== could not unlink /tmp/vgdb-pipe-to-vgdb-from-24308-by-sus-on-Zeus
==24308== could not unlink /tmp/vgdb-pipe-shared-mem-vgdb-24308-by-sus-on-Zeus
```
1. When the DHCPv4 lease expires kernel removes the route. So add it back
when we gain lease again.
Closes https://github.com/systemd/systemd/issues/12426
2. When UseRoutes=false do not remove router
- bridge or bonding master takes a reference of slave links.
- drop link from bridge or bonding master's slave list when slave link
is removed.
- change type of Link::slaves to Set*,
Fixes#12315.
When a uevent is received during the relevant interface is in
LINK_STATE_PENDING, then the interface may be initialized twice.
To prevent that, this introduces LINK_STATE_INITIALIZED.
Yu Watanabe