Hi,
My this doubt is regarding automatic tunneling. I know that freeBSd doesnot support
it. But i feel u can guide me in this.
Suppose iam implementing automatic tunneling then is there a need for me to use any of
the gif interfaces.
I feel that with the present freeBSD architecture i can implement automatic tunneling.
My idea is this when ever an ipv6 packet is to be sent over an ipv4 cloud then i
should call the gif_output() in the nd6_output(). In the gif_output() i should
generate the encapsulation header & call ip_output() to send the packet.
The only preoblem for me is to identify that the packet is to be sent over an ipv4
cloud. In the configured tunneling case we have a routing entry & it takes care of
calling gif_output().
FreeBSD uses the routing table to find the interface through which the packet is to be
sent. In this case if i have to send the packet through an ipv4 cloud then i should
specify the interface so that gif_output() is called.
Kindly tell is there a way for me to find that the packet is to be tunneled in advance.
regards
ravi prasad
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