ng_patch node

[Julian Elischer]

Dmitriy Zamuraev wrote:
>> Hi,
>> I've written netgraph node able to modify arbitrary (8|16|32)-bit
>> unsigned integer in passing packets. Node applies one of =,+,-,&,| and
>> ^ operations to number at given offset.

have an IP version that corrects the checksums as you fiddle bytes.
juat an idea

> 
> Thank you.
> I think about more functionality...
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