Re: Checksum in IPv6 header

2008-02-01 Thread Rahim Choudhary
Another point to note is this. In the case that a packet checksum/hash is used, a corrupted packet gets dropped on its way, whereas without such a checksum/hash it is dropped at the destination. Thus additional network resources are consumed. All this is assuming that layer 2 CRC has been circu

Re: Checksum in IPv6 header

2008-02-01 Thread Rahim Choudhary
Yes I meant it in the sense Wishwas explained it. And I also meant it in the sense of someone maliciously toggling bits. Let me say a word about the latter. Assuming that layer 2 CRC will be kosher after the bits have been maliciously toggled in the mutable fields of the front IPv6 header.

RE: Checksum in IPv6 header

2008-01-31 Thread Rahim Choudhary
day, January 29, 2008 11:10 AM > To: Rahim Choudhary; Fred Baker > Cc: ipv6@ietf.org > Subject: RE: Checksum in IPv6 header > > > Rahim, > > About the layer 2 and layer 4 checksums, from what I have > been told and AFAICT the IPv6 Extension Headers are only > covered

Re: Checksum in IPv6 header

2008-01-29 Thread Rahim Choudhary
for the input. Fred Baker <[EMAIL PROTECTED]> wrote: On Jan 28, 2008, at 2:03 PM, Rahim Choudhary wrote: This may be a matter that is common knowledge to this list. But please forgive me for asking. What were the reasons that the IPv6 working group decided not to inc

Checksum in IPv6 header

2008-01-28 Thread Rahim Choudhary
This may be a matter that is common knowledge to this list. But please forgive me for asking. What were the reasons that the IPv6 working group decided not to include a checksum field for the IPv6 packet Header? Does it have no security impact to omit the checksum? --