Eric C. Davis wrote: > Are there plans for Bind to enforce hostname compliance according > to RFC's or is this going to be left up to each DNS operator?
the question of benefit always arises when considering the application of RFCs. It's probably better not enforcing things just for the sake of complying to some RFC unless the issue is known to cause problems. For records not created through DDNS, it's better that your dns administration mechanisms do this, plus they can enforce more restrictive naming policies particular to your organization. For the hack of it, I did implement something in our system which would reject names not matching a regex. What's more the regex could be specific to the sub-groups, so hostnames in the SI group would have to begin "si-...". It was never enabled as there would have been some effort involved in cleaning up the existing entries. A document discussing hostnames written 7 years ago http://www.its.uq.edu.au/choosing-hostnames One of the zones we secondary has very little sub-structure and basically thousands of desktops were registering themselves with DDNS. Several years ago when developing my dnswalk2 script, it reported roughly a hundred bad names like 137 botany_ew (underscores were common) jb's\0329200 (spaces were common) I just checked and the situation is no better. Probably quite a few of these are machines not owned by the organization, though they they could insist on a valid hstname for connection to their network. Apart from zones we secondary, the only time we disable the check is for the _msdcs part of AD. Specifically only the gc records involve A records. I know it's not specified in the RFCs, but a pragmatic approach would be to have an option reporting bad hostnames ... except those A records matching "^gc\._msdcs\.". NB we always have AD a sub-zones, so it's easy to liberalize hostname checking just for that part of dns space, but that's not possible if the AD records exist in the main zone. Danny _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
