Re: [ns] addition to ip hdr

[Tarik Alj <aljtarik@INRS-Telecom.UQuebec.CA>]

> hi nsusers,
> 
> I am doing some simulation for which i need to add some fields in ip
> header.

it would be wiser to simply add your own header, this should not affect
how your simulations will 'represent' reality. By default all headers are
accessible within a packet

 > 
> I want to know whether I can do it by just adding the fields in "struct
> hdr_ip" or I will have to make some other changes too.
> 
> Becaoz I tried just adding some fields in Ip header. And it works
> perfectly fine when application is run on udp agent but not when run on
> tcp agent. I suppose may be some problem with hdrs becoz there is no udp
> hdr but there is tcp hdr. 
> 
> Kindly mail me the suggestions. 
> 
> Regards
> amit
>