Does this mean if we have 2 hosts connected back to back (there's no network 
device in between), sequence is guaranteed even in UDP? 

-----Original Message-----
From: Rick Jones [mailto:[EMAIL PROTECTED]
Sent: 21 September 2006 00:47
To: Majumder, Rajib
Cc: 'netdev@vger.kernel.org'
Subject: Re: UDP Out 0f Sequence


Majumder, Rajib wrote:
> Hi,
> 
> If I write UDP datagrams 1,2 and 3 to network and if the receiver
> receives in order 2,1, and 3, where can the sequence get changed? Is it
> at the source stack, network transit or destination stack?

Yes. :)

Although network transit is by far the most likely case.  Destination 
stack is a distant second and source stack an even more distant third. 
Generally stack writers try to avoid having places in their stacks where 
things can reorder, but it isn't completely unknown.

rick jones


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