[Click] dynamic IP-in-IP encapsulation

[Eddie Kohler]

Hi Mike,

I checked in an update so UDPIPEncap also takes DST_ANNO.  Thanks!

Eddie


Mike Wilson wrote:
> Can we do the same thing with UDPIPEncap?  (Does it just pass through 
> automatically to IPEncap?)
> 
> -Mike Wilson
> 
> On Fri, 26 Jan 2007, Eddie Kohler wrote:
> 
>> Hi Yi,
>>
>> I've just checked in an update to IPEncap that allows you to set its DST
>> argument to the string "DST_ANNO".  In this case, the element will set
>> the destination address to the destination address annotation's current
>> value.
>>
>> As a bonus, IPEncap should be a bit faster now since it precalculates
>> most of the checksum.
>>
>> Thanks for your patience,
>> Eddie
>>
>>
>> Yi Wang wrote:
>>> Hello,
>>>
>>> Is there an efficient way to do dynamic IP-in-IP encapsulation in Click,
>>> e.g., after a packet passes through a IPRouteTable, encapsulate it with
>>> the new destination address set to the dst address in the annotation.
>>>
>>> It seems to me that the IPEncap only does static encapsulation. Does it
>>> mean that I need to do some hack to do dynamic IP-in-IP encapsulation?
>>> One such way may be to add a new IP header to packets before they enter
>>> the IPRouteTable, and rewrite the outer destination address using the
>>> annotation after the lookup. But I was wondering if there is better way
>>> to do this.
>>>
>>> Thanks a lot in advance.
>>>
>>> Yi
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