Re: [MBONED] WGLC for <draft-ietf-mboned-auto-multicast-08.txt> - UDP checksum?

[Magnus Westerlund <magnus.westerlund at ericsson.com>]

Stig Venaas skrev:
> Magnus Westerlund wrote:
> [...]
>> Is this a reasonable solution to the issue?
> 
> All this looks fine to me. I assume that the default behaviour in
> stacks must be to still treat checksum 0 as a genuine checksum.
> For those applications using some protocol with no integrity check
> for checksum 0, there needs to be some way for them to signal that
> to the stack. This could be e.g. setsockopt() option for signalling
> this per socket.
> 

I don't know how people actually implemented things, but currently you
definitely can argue that checksum=0 in a IPv6/UDP packet is an illegal
value. I assume that if this change is done, you can implement the same
mechanism that exist for IPv4 to turn the checksum for IPv6/UDP

Cheers

Magnus Westerlund

IETF Transport Area Director & TSVWG Chair
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