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Message-ID: <20150323105808.GA13311@gondor.apana.org.au> Date: Mon, 23 Mar 2015 21:58:08 +1100 From: Herbert Xu <herbert@...dor.apana.org.au> To: Eric Dumazet <eric.dumazet@...il.com> Cc: "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org, Roland Dreier <roland@...estorage.com> Subject: Re: arp_hash On Mon, Mar 23, 2015 at 10:35:12AM +1100, Herbert Xu wrote: > On Mon, Mar 23, 2015 at 10:22:42AM +1100, Herbert Xu wrote: > > > Unfortunately even the high-order bits are too predictable: > > > > 10.0.0.128 0xbd78b1f2 > > 10.0.0.64 0xfd78b1f2 > > 10.0.0.192 0x7d78b1f2 > > 10.0.0.32 0x9d78b1f2 > > ... > > 10.0.0.63 0xd078b1f2 > > 10.0.0.191 0x5078b1f2 > > 10.0.0.127 0x9078b1f2 > > 10.0.0.255 0x1078b1f2 > > I should've put this here > > 10.0.128.0 0x9af8b1f2 OK I don't have a good way of exploiting this, so maybe this isn't a problem after all. Cheers, -- Email: Herbert Xu <herbert@...dor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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