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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m trying to implement consistent client prefix policies and also adhere to RFC 6724. Windows 8/8.1 come this way by default. However, Windows Vista/7 follow the older RFC 3484 rules. To update Windows Vista/7 I came up with a simple script. The issue is, I can’t get Windows 7 to take the policy for the deprecated site-local prefix (fec0::/10):<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>netsh int ipv6 add prefixpolicy fec0::/10 1 11<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>netsh int ipv6 show pre<o:p></o:p></p><p class=MsoNormal>(…)<o:p></o:p></p><p class=MsoNormal> 1 11 fe00::/10<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>From experimentation, it seems to ignore anything after the first 8 bits. The only way I can get it to accept fec0 is if I enter “fec0::/16” which obviously isn’t what I want. It’s almost like the prefix policies have to be a multiple of 8 bits.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I could have sworn this worked before but for the life of me I can’t get it to work now. I had a few other people try it to see if I’m doing something silly but same results. Has anyone else run into this? Any suggestions?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal> --Jim<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>