Hello SixXs-Team, R9528 was admin disabled because I should elaborate on the need for a subnet for a reverse name lookup of e-mail. Many IPv6 enabled mail servers reject e-mails from mail servers were front and reverse name lookup do not match. It gets even worse if no reverse name lookup is set. This is a real example for such a refused message happened to the exact endpoint I want the subnet for: (infra) [~] grep 028FB44249 /var/log/mail.log Aug 4 06:40:08 infra postfix/smtpd[25283]: 028FB44249: client=p57B16AA8.dip.t-dialin.net[87.177.106.168] Aug 4 06:40:08 infra postfix/cleanup[25284]: 028FB44249: message-id=<001501ca14bd$a8c5f300$0114a8c0@peterexl7xekvv> Aug 4 06:40:08 infra postfix/qmgr[22323]: 028FB44249: from=<peter@glanzmann.de>, size=1374, nrcpt=1 (queue active) Aug 4 06:40:08 infra amavis[24686]: (24686-01) Passed CLEAN, [87.177.106.168] [87.177.106.168] <peter@glanzmann.de> -> <d-hoffmann@freenet.de>, Message-ID: <001501ca14bd$a8c5f300$0114a8c0@peterexl7x ekvv>, mail_id: e7Nn1o9KM9E6, Hits: 1.802, size: 914, queued_as: 028FB44249, 1007 ms Aug 4 06:40:08 infra postfix/smtp[25285]: 028FB44249: to=<d-hoffmann@freenet.de>, relay=mx.freenet.de[2001:748:100:40::8:111]:25, delay=0.29, delays=0.03/0.03/0.14/0.09, dsn=5.0.0, status=bounced (h ost mx.freenet.de[2001:748:100:40::8:111] said: 550-inconsistent or no DNS PTR record for 2001:6f8:1c00:78::2 (see RFC 1912 550 2.1) (in reply to RCPT TO command)) Aug 4 06:40:08 infra postfix/qmgr[22323]: 028FB44249: removed Aug 4 06:40:08 infra postfix/bounce[25286]: 028FB44249: sender non-delivery notification: 5061044264 In the meantime I would not only use the Subnet, if you grant it to me, for reverse name lookup for e-mail but also for virtual machines and 5 other machines that are behind the tunnel endpoint. I opened a ticket because my two e-mails to info@sixxs.net on 27th July and 4th August stayed unanswered. I appreciate if you would grant me the subnet. Thomas -- Thomas Glanzmann <thomas@glanzmann.de> Landline +49 9131 614 -720 Rathsbergerstrasse 28 Facsimile +49 9131 614 -721 D-91054 Erlangen / Burgberg http://thomas.glanzmann.de/