loopback

Grant Taylor gtaylor at tnetconsulting.net
Wed Feb 19 19:31:15 UTC 2020


On 2/18/20 7:34 AM, Ward, Mike S wrote:
> Hello all, I have a small problem, and I was wondering if someone could 
> help me.  My bind9 dns gets a query for loopback. I have tried and tried 
> to define the word loopback in the dns as a forward zone with reverse 
> loopkup, but doesn’t seem to take. I have tried to CNAME it using 
> localhost, but that doesn’t seem to fix it either. My version of BIND 
> is: BIND 9.12.3 <id:6c8e92c> Can someone please help? Please help me 
> define loopback so that request for loopback does not fail as in the 
> entries below. My localhost configurations are:

Based on the log entries that you shared, it looks like the qname is 
"loopback.".  Is that correct?

> $TTL 3h
> $ORIGIN localhost.
> @       1h      IN     SOA     @       root (
>                         02112008        ; serial
>                         3600            ; refresh 1 hour
>                         2H              ; retry 1 half hour
>                         4W              ; expiry after 2 weeks
>                         1h              ; minimum TTL
>                         )
> @       IN      NS      @
>         IN      A       127.0.0.1

I would expect that you could define a new zone ~> tld that is 
"loopback", just like — what appears to be — the localhost. zone above.

You won't be able to use a CNAME from loopback. to localhost. b/c of 
problems with CNAMEs in the apex.  I don't know if a dname would work or 
not.  Though I don't think that you need a cname or dname.  Read:  I 
think a new "loopback." zone (like the "localhost." zone above) would 
suffice for your needs.

This really sounds to me like any generic new / custom (read: squatting) 
TLD.



-- 
Grant. . . .
unix || die

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