UAG error: “A timeout occurred. The 6to4 network interface cannot be enabled”

by Shijaz Abdulla on 06.02.2010 at 09:51

I was trying to configure DirectAccess on UAG in a test environment, and kept getting the above error whenever I tried to activate my configuration.

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The solution is simple. UAG needs two consecutive public IP addresses assigned on the external network interface. In a test environment, you would sometimes use a private IP range like 10.0.0.0 or 192.168.0.0 for the external interface, which is not supported. Also note, the UAG DirectAccess server cannot be behind a NAT.

Change the IP address on the external interface to a public IP address, and the error will go away! 🙂

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2 Responses to UAG error: “A timeout occurred. The 6to4 network interface cannot be enabled”

  1. New blog post: http://tinyurl.com/yddtkhc – #UAG error: “A timeout occurred. The 6to4 network interface cannot be enabled”

  2. Ramadji says:

    Thanks a lot Shijaz!
    I’m trying to deploy UAG DirectAccess in my work environment and was banging my head for this error message. I used 2 consecutive private IP NATed to a public IP and I was hoping that things would work. I kept getting the same error and reading your blog was sobering for me. During my research to set up UAG DirectAccess I read about the need for 2 consecutive public IPs on the external interface of the UAG but I thought that I could use NAT to handle things.
    Once again, choukrane.
    Ma ‘ salama!

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