On Fri, Jul 24, 2020 at 12:14:17PM +0200, Erik Auerswald wrote: > Hi, > > On Fri, Jul 24, 2020 at 10:36:17AM +0200, Juergen Schoenwaelder wrote: > > On Wed, Jul 22, 2020 at 01:46:38PM +0200, Ladislav Lhotka wrote: > > > On 22. 07. 20 13:00, Juergen Schoenwaelder wrote: > > > > > > > > my understanding is that Lada is now proposing something slightly > > > > different but I am not sure what exactly, hence I asked again. > > > > > > Oh yes, I messed it up by mixing different things together, sorry. I > > > checked again the ML archive, and the message that is relevant to this > > > thread is this: > > > > > > https://mailarchive.ietf.org/arch/msg/netmod/PISOifrtow4oWLGW7meBBSri7nM/ > > > > > > The aim of that proposal was to limit the "inet:host" type to DNS names > > > that are reasonable as host names, i.e. eliminate values like "." or "_". > > > > You are proposing to change the length restriction from 1..253 to > > 2..253 following RFC 952: > > > > [...] Single character names > > or nicknames are not allowed. > > What about single character host names currently used, e.g., > a.root-servers.net.? > > There are single character subdomain labels in use as well, e.g., l.de.. >
The description of 'host name' in RFC 8499 explains that host names are considerd to be domain names but in some contexts a host name is considered to be just the first label of a domain name. In our context, however, it is pretty clear that we consider a host name to be a domain name. Hence, what Lada suggests is to formally disallow names like 'a.' while 'a.root-servers.net.' would not be affected. /js -- Juergen Schoenwaelder Jacobs University Bremen gGmbH Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany Fax: +49 421 200 3103 <https://www.jacobs-university.de/> _______________________________________________ netmod mailing list netmod@ietf.org https://www.ietf.org/mailman/listinfo/netmod
