"if exists host-name" for IPv6 DDNS?

[WBrown at e1b.org]

Matthew wrote on 09/23/2011 03:21:06 AM:

> On 23/09/2011 00:39, Joachim Tingvold wrote:
> > Or replace :: with _, 
> 
> '_' is an illegal character in hostnames in the DNS...

Yeah, I got hosed by that one by a consultant. 

How about replace all : with a -.  :: becomes --.   No rule against that, 
is there?  And much simpler.



Confidentiality Notice: 
This electronic message and any attachments may contain confidential or 
privileged information, and is intended only for the individual or entity 
identified above as the addressee. If you are not the addressee (or the 
employee or agent responsible to deliver it to the addressee), or if this 
message has been addressed to you in error, you are hereby notified that 
you may not copy, forward, disclose or use any part of this message or any 
attachments. Please notify the sender immediately by return e-mail or 
telephone and delete this message from your system.