Bug 85710

Summary:	RFE: timesyncd: add way how other dhcp implementations (i.e. not networkd) can inform timesyncd about NTP servers
Product:	systemd	Reporter:	Martin Gallant <freedesktop>
Component:	general	Assignee:	systemd-bugs
Status:	NEW ---	QA Contact:	systemd-bugs
Severity:	normal
Priority:	medium	CC:	freedesktop
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Martin Gallant 2014-10-31 17:54:18 UTC

systemd fails to set up timesyncd.service with the NTP server provided by DHCP.

I just tested this on systemd version 216-3 and 217-3 on Arch x86_64

I was referred here by the Arch Linux folks

Installing NetworkManager does not fix this issue - should a separate bug be filed here as well?

Steps to reproduce:
Pristine base install, rebooted # Use ip link to retrieve interface name
dhcpcd -T enps0s25 # Observe ntp_servers stanza in response
systemctl start dhcpcd@enps0s25
timedatectl set-ntp true # Start NTP client
timedatectl	# Confirm NTP is enabled and in	sync
journalctl -f # Observe NTP on default time*.google.com

Comment 1 Lennart Poettering 2014-11-02 18:03:55 UTC

Well, it does work with networkd's dhcp implementation.

However, there's no standardized way how a generic dhcp implementation like dhcpcd (which you appear to be using) could inform the rest of the system about the NTP servers it learnt.

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