The tunnel interface will not come up without IP address. That's why it is
required for VTI.

Regards,
Piotr

2011/9/14 Kingsley Charles <[email protected]>

> Hi all
>
> For SVTI, we need an IP address to check for the tunnel interface
> reachability. But why do we need an IP for DVTI?
>
> We usually unnumber it to loopback interface usually because the loopback
> interface never goes down. But do we need to configure an IP address for
> loopback interface? Without IP address configured for the loopback interface
> and if the DVTI is unnumbered to it, the EzVPN server doesn't route the
> packets into the tunnel.
>
> Any thoughts?
>
> With regards
> Kings
>
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