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DNS failing when using DNS Request Split Tunneling

Hello, 

 

I have 2110 and I use RA VPN with anyconnect.

I want to send the DNS queries in general through the clients DNS, and only when the corporate domain is being accessed to send them through the corporate DNS. 

 

I used "DNS Request Split Tunneling" -> "Send only specified domains over tunnel", but in that case, it does not show pages.

 

What am I missing?

 

Thanks and regards, 

Konstantinos

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Re: DNS failing when using DNS Request Split Tunneling

Hello,

I observed that the problem is with IPv6.
What I mean is when the provider has IPv4, all work as expected.
When the provider has IPv6, the corporate sites work fine. All the other sites though do not work.

Any ideas if there is a way to disable IPv6 from the FMC?
Will it change the behavior?

Thanks and regards,
Konstantinos