Hi,
Newly setup machine, latest sabayon/gentoo, kde5:
the logs shows "Network configuration changed" and timesynchronization every minute. I deleted a "watchdogsec=1min" from the systemd-timesyncd.service - no help (I did even reboot). I also noticed another 1-min "dog" in systemd-networkd, but now I get to scared killing the dog may affect my network. Can anyone shed some light on this? I don,t like a huge timer log file written by the minute on my shiny new ssd....

journal:
<q>
Sep 16 10:17:50 machine systemd[1]: Listening on Network Service Bus Name.
Sep 16 10:17:50 machine systemd[1]: Starting Network Service...
Sep 16 10:17:50 machine systemd-timesyncd[1641]: Network configuration changed, trying to establish connection.
Sep 16 10:17:50 machine systemd-networkd[2665]: Enumeration completed
Sep 16 10:17:50 machine systemd[1]: Started Network Service.
Sep 16 10:17:50 machine systemd-timesyncd[1641]: Synchronized to time server 129.70.132.33:123 (2.gentoo.pool.ntp.org).
Sep 16 10:18:53 machine systemd[1]: Listening on Network Service Bus Name.
Sep 16 10:18:53 machine systemd[1]: Starting Network Service...
Sep 16 10:18:53 machine systemd-timesyncd[1641]: Network configuration changed, trying to establish connection.
Sep 16 10:18:53 machine systemd-networkd[2669]: Enumeration completed
Sep 16 10:18:53 machine systemd[1]: Started Network Service.
Sep 16 10:18:53 machine systemd-timesyncd[1641]: Synchronized to time server 129.70.132.33:123 (2.gentoo.pool.ntp.org).
</q>
systemd-timesyncd.service
<q>
[Unit]
Description=Network Time Synchronization
Documentation=man:systemd-timesyncd.service(8)
ConditionCapability=CAP_SYS_TIME
ConditionVirtualization=!container
DefaultDependencies=no
RequiresMountsFor=/var/lib/systemd/clock
After=systemd-remount-fs.service systemd-tmpfiles-setup.service systemd-sysusers.service
Before=time-sync.target sysinit.target shutdown.target
Conflicts=shutdown.target
Wants=time-sync.target

[Service]
Type=notify
Restart=always
RestartSec=0
ExecStart=/usr/lib/systemd/systemd-timesyncd
CapabilityBoundingSet=CAP_SYS_TIME CAP_SETUID CAP_SETGID CAP_SETPCAP CAP_CHOWN CAP_DAC_OVERRIDE CAP_FOWNER
PrivateTmp=yes
PrivateDevices=yes
ProtectSystem=full
ProtectHome=yes
WatchdogSec=1min

[Install]
WantedBy=sysinit.target
machine /usr/lib64/systemd/system #
machine /usr/lib64/systemd/system #
machine /usr/lib64/systemd/system # timedatectl status
Local time: Mi 2015-09-16 09:32:58 CEST
Universal time: Mi 2015-09-16 07:32:58 UTC
RTC time: Mi 2015-09-16 07:32:58
Time zone: Europe/Berlin (CEST, +0200)
Network time on: yes
NTP synchronized: yes
RTC in local TZ: no
machine /usr/lib64/systemd/system # more /etc/systemd/timesyncd.conf
# This file is part of systemd.
</q>