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Error when committing dhcpv6-relay configuration.
Closed, ResolvedPublicBUG


On v1.2.1, Build ID '85838104-ce3a-4024-a6be-bfe527dd1eeb', VMware, when I configure a dhcpv6 listen-interface and an upstream interface then commit, I get the following error:

[ Service dhcpv6-relay ]

Traceback (most recent call last):
File "/usr/libexec/vyos/conf_mode/", line 113, in <module> c =get_config()
File "/usr/libexec/vyos/conf_mode/", line 56, in get_config listen= addr + '%' + intf
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'

[[service dhcpv6-relay]] failed
Commit failed

It worked fine in v1.1.8, configuration the same.

Sample Configuration (device is in a closed network so I have to recreate it here)

ethernet eth0 {
	address 2001:105::254/64
	duplex auto
	hw-id 00:50:56:80:cb:a3
	ipv6 {
	    dup-addr-detect-transmits 1
	    router-advert {
		cur-hop-limit 64
		link-mtu 0
		managed-flag true
		max-interval 600
		other-config-flag false
		prefix 2001:105::/64 {
			autonomous-flag false
			on-link-flag true
			valid-lifetime 2592000
		reachable-time 0
		retrans-timer 0
		send-advert true
	smp-affinity auto
	speed auto
ethernet eth1 {
	address 2001:1516::17/64
	duplex auto
	hw-id 00:50:56:80:f6:0a
	smp-affinity auto
	speed auto

Whereas eth1 is the upstream interface, eth0 is the LAN interface, and the dhcpv6 server is 2001:100::100. The following dhvp6-relay commands are entered which create the error when committing:

set service dhcpv6-relay upstream-interface eth1 address 2001:100::100
set service dhcpv6-relay listen-interface eth0


Difficulty level
Unknown (require assessment)
VyOS 1.2.1
Why the issue appeared?
Will be filled on close

Event Timeline

c-po claimed this task.Jul 24 2019, 6:32 PM

Got it to work correctly by adding the address of the listen-interface onto eth0

set service dhcpv6-relay listen-interface eth0 address 2001:105::254
c-po added a comment.Jul 25 2019, 2:09 PM

Thanks - but still there should not be a Python error and also a user error message

Dmitry added a subscriber: Dmitry.Jul 25 2019, 4:36 PM
c-po closed this task as Resolved.Jul 25 2019, 7:43 PM
c-po reassigned this task from c-po to Dmitry.
c-po moved this task from Need Triage to VyOS 1.2.3 on the VyOS 1.2 Crux board.
c-po edited projects, added VyOS 1.2 Crux (VyOS 1.2.3); removed VyOS 1.2 Crux.
c-po moved this task from Needs Triage to Finished on the VyOS 1.2 Crux (VyOS 1.2.3) board.
c-po added a subscriber: c-po.