netdev - Re: [PATCH 02/05] ipv6: RFC4214 Support

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Message-ID: <47320B9B.6050301@simon.arlott.org.uk>
Date:	Wed, 07 Nov 2007 19:01:47 +0000
From:	Simon Arlott <simon@...e.lp0.eu>
To:	"Templin, Fred L" <Fred.L.Templin@...ing.com>
CC:	YOSHIFUJI Hideaki / 吉藤英明 
	<yoshfuji@...ux-ipv6.org>, netdev@...eo.de, netdev@...r.kernel.org
Subject: Re: [PATCH 02/05] ipv6: RFC4214 Support

On 07/11/07 18:52, Templin, Fred L wrote:
>> > > > > +	eui[0] = 0;
>> > > > > +
>> > > > > +	/* Check for RFC3330 global address ranges */
>> > > > > +	if (((ipv4 >= 0x01000000) && (ipv4 < 0x0a000000)) ||
>> > > > > +	    ((ipv4 >= 0x0b000000) && (ipv4 < 0x7f000000)) ||
>> > > > > +	    ((ipv4 >= 0x80000000) && (ipv4 < 0xa9fe0000)) ||
>> > > > > +	    ((ipv4 >= 0xa9ff0000) && (ipv4 < 0xac100000)) ||
>> > > > > +	    ((ipv4 >= 0xac200000) && (ipv4 < 0xc0a80000)) ||
>> > > > > +	    ((ipv4 >= 0xc0a90000) && (ipv4 < 0xc6120000)) ||
>> > > > > +	    ((ipv4 >= 0xc6140000) && (ipv4 < 
>> 0xe0000000))) eui[0] |=
>> > > > > 0x2;
>> I don't understand.
>> 
>> For example, 1.0.0.11 is valid IPv4 global address.
>> In little-endian, this is not in the range of
>> 0x00000001 <= addr <= 0x0000000a (addr is 0x0b000001).
> 
> Maybe it is I who did not understand. Can you suggest a clean solution?

((ipv4 & htonl(0xFF000000)) == htonl(0x0A000000)) etc.?

-- 
Simon Arlott
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