Waiting for sshd ERROR: Network Error: getaddrinfo: Name or service not known Check your knife configuration and network settings

I am getting this error when creating an instance with euca.

$ knife euca server create r ‘role[mem]’ -N node -f m1.small -I
ami-000007bf -Z ‘melbourne-qh2’ -x ubuntu -i /home/abolap/adelta
Instance ID: i-0002a262
Flavor: m1.small
Image: ami-000007bf
Availability Zone: nova
Security Groups: default
SSH Key: adelta

Waiting for server…
Public DNS Name: server-1b7ae8b3-eb19-40c4-bbe9-a61c940190c1
Private DNS Name: server-1b7ae8b3-eb19-40c4-bbe9-a61c940190c1

Waiting for sshd ERROR: Network Error: getaddrinfo: Name or service not
known
Check your knife configuration and network settings

Any idea please?

Regards, Ifeanyi.