Bug 81177

Summary:	RFE: systemd-networkd: implement setting tokens for .network
Product:	systemd	Reporter:	Fireball <ao>
Component:	general	Assignee:	Tom Gundersen <teg>
Status:	RESOLVED FIXED	QA Contact:	systemd-bugs
Severity:	enhancement
Priority:	medium	CC:	susant, teg
Version:	unspecified
Hardware:	All
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Fireball 2014-07-10 14:56:39 UTC

I'd like "ip token" functionality to be implemented for .netdev files.
Example of ip command:
# ip token set ::2/64 dev eth0

It allows for the host part of SLAAC-configured IPv6 address to be set explicitly, not generated from MAC address.

Comment 1 Tom Gundersen 2014-08-15 14:39:13 UTC

I'd be happy to take a patch for this.

Comment 2 Tom Gundersen 2015-02-09 11:19:25 UTC

This is now upstream. Please test and let me know in case it does not work as expected.

Comment 3 Fireball 2015-03-13 08:20:36 UTC

Hello again.
I'm setting token for two of my interfaces: eth0 and br0 (they are unrelated, br0 includes tap1 and veth0).
Setting the token works for eth0 always.

Recently it broke for br0.
So I set Environment=SYSTEMD_LOG_LEVEL=debug for networkd.

My br0.network:

[Match]
Name=br0

[Network]
Description=Network Bridge For VPN
IPv6Token=::32
IPForward=yes

A piece of log during boot (journalctl -b|grep networkd|grep br0):

 systemd-networkd[432]: br0             : loaded bridge
 systemd-networkd[432]: br0             : creating
 systemd-networkd[432]: br0             : flags change: +MULTICAST +BROADCAST
 systemd-networkd[432]: br0             : link 13 added
 systemd-networkd[432]: device 0x7f45925790d0 has devpath '/devices/virtual/net/br0'
 systemd-networkd[432]: br0             : udev initialized link
 systemd-networkd[432]: br0             : netdev has index 13
 systemd-networkd[432]: br0             : netdev ready
 systemd-networkd[432]: br0             : saved original MTU: 1500
 systemd-networkd[432]: br0             : created
 systemd-networkd[432]: br0             : link state is up-to-date
 systemd-networkd[432]: br0             : found matching network '/etc/systemd/network/br0.network'
 systemd-networkd[432]: br0             : bringing link up
 systemd-networkd[432]: br0             : link configured
 systemd-networkd[432]: veth0           : enslaving by 'br0'
 systemd-networkd[432]: br0             : enslaving link 'veth0'
 systemd-networkd[432]: br0             : flags change: +UP
 systemd-networkd[432]: br0             : br0             : could not bring up interface: Invalid argument
 systemd-networkd[432]: br0             : flags change: +LOWER_UP +RUNNING
 systemd-networkd[432]: br0             : gained carrier
 systemd-networkd[432]: br0             : Adding address: fe80::8cb7:3bff:fe38:1f40/64 (valid for ever)
 systemd-networkd[432]: br0             : Adding address: xxxx:xxxx:xxxx:xxxx:8cb7:3bff:fe38:1f40/64 (valid for 23h 59min 59s)

The token is not shown with "ip token get dev br0".
If I remove IPv6Token= the error "could not bring up interface: Invalid argument" is not shown anymore.

Comment 4 Lennart Poettering 2016-06-07 10:24:26 UTC

Hmm, if this issue persists, could you file a bug on systemd github? This bug report was the RFE originally, which was implemented. Let's track bugs in bug reports of their own.

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