underscore in A or PTR records
Matus UHLAR - fantomas
uhlar at fantomas.sk
Wed Feb 17 08:53:17 UTC 2021
On 17.02.21 08:13, ONRUBIA AVILES Carlos (CCS/MST) wrote:
>I face the following problem ==> bind do not accept an A record with underscore:
>Example: example_try A 220.127.116.11
>Same for a PTR:
>Example: 18.104.22.168 PTR example_try
>Is it absolutely forbidden to have in such cases an '_'?
absolutely no, but since underscore is not valid in hostname as per rfc1123,
I don't recomment you to use it in hostnamed.
>I know that it is possible for SRV or TXT records.
it's valid in DNS, but not in hostnames. You can in fact disable checking
but you may encounter problems with remote sites.
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
Linux IS user friendly, it's just selective who its friends are...
More information about the bind-users