Sun, 15 Jul 2007, by robin.listas@telefonica.net:
The Sunday 2007-07-15 at 01:24 +0200, Theo v. Werkhoven wrote:
Received-SPF: none (Address does not pass the Sender Policy Framework) SPF=HELO; sender=lists4.suse.de; remoteip=::ffff:195.135.221.135; remotehost=lists4.suse.de; helo=lists4.suse.de; receiver=exa.billmerriam.com;
I noticed the ipv6 address, and I was curious to check who it was:
That is not an IPv6 address. IPv6 addresses are written with hex notation, e.g. 2001:888:10:90f::2 i.e. 8193.2184.16.2319.0.0.0.2 when written in decimal. What the meaning is of the '::ffff:' part I don't know, but it has nothing to do with IPv6 afaik. So your analysis has no meaning.
Wrong.
Ipv6 addresses can be written in several different formats. The "::ffff" part is equivalent to :0:0:0:0:ffff.
Right. But there is no valid (public) address range in IPv6 that starts with ::ffff , so this address can never be resolved by an Internet DNS.
cer@nimrodel:~> host ::ffff:195.135.221.135 Host 7.8.d.d.7.8.3.c.f.f.f.f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa not found: 3(NXDOMAIN)
See? The host command knows how to read and interpret it, so it is standard notation.
You were right there, but not by trying to reverse resolve it, that's just wrong. Theo -- Theo v. Werkhoven Registered Linux user# 99872 http://counter.li.org ICBM 52 13 26N , 4 29 47E. + ICQ: 277217131 SUSE 10.2 + Jabber: muadib@jabber.xs4all.nl Kernel 2.6.20 + See headers for PGP/GPG info. Claimer: any email I receive will become my property. Disclaimers do not apply. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org