Date: Thu, 07/30 & Tue, 08/04
Start time: 5:00 AM
End time: 7:00 AM
Duration: < 10 min expected
Services affected: Assignments
ISC will be performing maintenance on Penn's Network Names & Numbers service to upgrade the Assignments server software from 2.7.3 to 2.7.4. This work only affects the Assignments servers. The current version of the Assignments client will remain at 2.4.0.
This maintenance release resolves several bugs, including the following ([ID numbers]) that may be apparent to end users under certain conditions:
* [36] When renaming a host registration (A/PTR or AAAA/PTR), if the address record is the only one of either type with a particular name, any CNAME, MX, or SRV records that refer to that name will be updated to refer to the new name after warning the user. Prior to the upgrade, dependent records would be updated silently upon renaming the only A/PTR, or the only AAAA/PTR, even if one or more records of the opposite type existed with the same name.
* [55] The create operation for MX and SRV records will fail if such records for the requested name already exist, and require an update operation. Prior to the upgrade, the server would accept a subsequent create operation for the same name, which would lead to an inconsistency between the Assignments UI and the published DNS data that required back-end intervention to recover.
* [260] Any API method that returns an IPv6 prefix length represents it as a string. This parameter was erroneously returned as an integer from the updateHost6 method in 2.6.1, and from findName, findHost6, getAllIPv6AddressRanges, and searchResourceRecords in 2.6.1 through 2.7.3. This would cause the client to crash when saving the IPv6 address ranges table to a file.
* [267,268] An attempt to create or rename a host registration (A/PTR or AAAA/PTR) will fail if that would result in a name for which Assignments does not manage the DNS data, and if the "Publish A" or "Publish AAAA" flag is set. It is still possible to register a PennNet IP with a domain name that is not managed by the Network Names & Numbers service (e.g. to host a site for a school- or center-operated domain name) by clearing the applicable "Publish" flag.