[Click] Modification(handling) of an ip packet data field ?

[yacine.djemaiel]

Hi all,

i am trying to manipulate (display or modify) ip packet
fields. Did anyone know how to access data field in IP packet
for modification or displaying. I am able to access ip/tcp
header fields by using click_ip/click_tcp structures, but how
modify them (by using WriteablePacket for example)?. 

Thanks for any help.
Yacine

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