Re: [BK-PATCH 2.4] IPV6: ensure to evaluate checksum

[YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@xxxxxxxxxxxxxx>]

In article <20040520081421.594c5447.davem@xxxxxxxxxx> (at Thu, 20 May 2004 
08:14:21 -0700), "David S. Miller" <davem@xxxxxxxxxx> says:

> I can see both advantages and disadvantages of this
> behavior.  But what I want to ask is if ipv6 RAW is
> being different on purpose, for example does the ipv6
> advanced API specify this perhaps?

Yes. RFC3542 (Advanced Sockets Application Program Interface (API) for 
IPv6) says:
|   For other raw IPv6 sockets (that is, for raw IPv6 sockets created
|   with a third argument other than IPPROTO_ICMPV6), the application
|   must set the new IPV6_CHECKSUM socket option to have the kernel (1)
|   compute and store a checksum for output, and (2) verify the received
|   checksum on input, discarding the packet if the checksum is in error.

--yoshfuji