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Revert "networkd: change UseMTU default to true. (#6837)" (#6950)

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This reverts commit 22043e4317.
UseMTU is broken on real hardware and should not be enabled by default.
This commit is contained in:
Andrew Jeddeloh 2017-10-05 03:58:02 -07:00 committed by Zbigniew Jędrzejewski-Szmek
parent 70b491d190
commit 95ab9eff1e
3 changed files with 3 additions and 7 deletions
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5
NEWS
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@ -16,11 +16,6 @@ CHANGES WITH 235:
respectively. They complement the existing "set-log-level" and
"set-log-target" verbs, which can be used to change those values.
* systemd-networkd .network DHCP setting UseMTU default has changed
from false to true. Meaning, DHCP server advertised MTU setting is
now applied by default. This resolves networking issues on low-mtu
networks.
* journald.conf gained a new boolean setting ReadKMsg= which defaults
to on. If turned off kernel log messages will not be read by
systemd-journald and not be included in the logs. It also gained a

2
man/systemd.network.xml
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@ -1063,7 +1063,7 @@
<listitem>
<para>When true, the interface maximum transmission unit
from the DHCP server will be used on the current link.
Defaults to true.</para>
Defaults to false.</para>
</listitem>
</varlistentry>
<varlistentry>

3
src/network/networkd-network.c
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@ -223,7 +223,8 @@ static int network_load_one(Manager *manager, const char *filename) {
* even if they are commented in the man?
* These vars might be overwriten by network_apply_anonymize_if_set */
network->dhcp_vendor_class_identifier = false;
network->dhcp_use_mtu = true;
/* NOTE: from man: UseMTU=... Defaults to false*/
network->dhcp_use_mtu = false;
/* NOTE: from man: UseTimezone=... Defaults to "no".*/
network->dhcp_use_timezone = false;