Setting source-ip interface for DNS request

Topic

Dear all,

Seems there is no possibility to specify setting the source ip under VRF for the DNS service, while in the Alcatel official documents is supported, someone have some idea?

The devices are 6860/6900 and the release is 8.6R2

HOSTNAME-> vrf VRF01NETMGMT ip service source-ip “VLAN1000” all
HOSTNAME-> vrf VRF01NETMGMT show ip service source-ip
Legend: – no explicit configuration
Application   Interface-name

————-+——————————–

dns           –
ftp           VLAN1000
ldap          VLAN1000
ntp           VLAN1000
radius        VLAN1000
sflow         –
snmp          VLAN1000
ssh           VLAN1000
swlog         VLAN1000
tacacs        VLAN1000
telnet        VLAN1000
tftp          VLAN1000
ptp           VLAN1000

HOSTNAME> vrf VRF01ip service source-ip “VLAN1000” dns
ERROR: Not supported for non-default VRF, VRF

Let me know
Best Regards

Date
26.06.2020
answer
1
views
0
Author
Asked by stploop

Answers

Hi,

Default Source Interface for dns requests is the outgoing interface and setting the "ip source" is not supported in VRF as stated in the configuration guide (CLI guide is ambiguous on this point). you may confgure a separate UDP relay setting for port/service to VLAN is required per VRF instance. For example : in the context of the VRF01 instance: "-> ip udp dns vlan 1000".

Please refer to the configuration guide for more insights :

Khadir.

Date
26.06.2020
Author
Asked by klentil
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