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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>hi,<o:p></o:p></p><p class=MsoNormal>we’re migrating from bind to powerdns and get confused about how to setup reverse delegation correctly, since subnets smaller /24 seems not to work out oft he box.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>example: our ISP delegates the subnet 10.10.10.192/27 to our server as primary NS.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>what ist he correct way to setup this reverse zone?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>in bind we just used the zone 192.10.10.10.in-addr-arpa with PTRs from 193 to 222 and it worked without problems.<o:p></o:p></p><p class=MsoNormal>the zone2sql tool converted this zone to powerdns, but it wasn’t working as expected.<o:p></o:p></p><p class=MsoNormal>it seems that powerdns thinks 192.10.10.10.in-addr.arpa 10.10.10.192/32!<o:p></o:p></p><p class=MsoNormal>when changing the zone to 10.10.10.in-addr.arpa it works, but i think this means, powerdns manages this zone for 10.10.10.0/24 subnet not 10.10.10.192/27.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>so i’m wondering, what ist he correct way to setup such a reverse zone in powerdns?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>while searching for the right answer, i stumbled upon RFC2317 which from what i understand explaines how the ISPs have to setup their nameservers to provide subnets smaller than /24 to customers.<o:p></o:p></p><p class=MsoNormal>does this mean the in-addr.arpa lookups only works in /24 chunks?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>regards.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>MK<o:p></o:p></p></div></body></html>