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Date: Fri, 04 Mar 2011 20:58:17 -0800 (PST) From: David Miller <davem@...emloft.net> To: hpa@...or.com Cc: ebiederm@...ssion.com, netdev@...r.kernel.org, jsing@...gle.com Subject: Re: FYI: tftp-hpa breaks when used on secondary ip addresses From: "H. Peter Anvin" <hpa@...or.com> Date: Fri, 04 Mar 2011 17:31:00 -0800 > If this is done for all local connections (as opposed to the ones that > have been configured explicitly by the administrator to behave that > way), that's a massive lossage. Not only does a large number of > applications use this trick to determine if an address is local (e.g. > allowing bypass) -- it is pretty much the only portable way to do it -- > but it would cause applications which expect to get a reply back from > the same address they sent a request to to completely fall on their face. Actually this is what SOL_IP, IP_PKTINFO, was created for. Even glibc uses it. -- 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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