SSAC Advisory on DNS "Search List" Processing (R-1)
| Date Issued | Document | Reference ID | Current Phase |
|---|---|---|---|
| SSAC Advisory on DNS "Search List" Processing (R-1) | SAC064 | CLOSED |
Description:
The SSAC invites all ICANN Supporting Organizations and Advisory Committees, the IETF, and the DNS operations community to consider the following proposed behavior for search list processing and comment on its correctness, completeness, utility and feasibility.
a. Administrators (including DHCP server administrators) should configure the search list explicitly, and must not rely on or use implicit search lists; Where DNS parameters such as the domain search list have been manually configured, these parameters should not be overridden by DHCP.
b. When a user enters a single label name, that name may be subject to search list processing if a search list is specified, but must never be queried in the DNS in its original single-label form.
c. When a user queries a hostname that contain two or more labels separated by dots, such as www.server, applications and resolvers must query the DNS directly. Search lists must not be applied even if such names do not resolve to an address (A/AAAA). Therefore www.server is always a FQDN.
STATUS UPDATES
| Date | Phase | Type | Status Updates |
|---|---|---|---|
| Closed | Phase Change | This Advice Item is now Closed |
| Phase 5 | Phase Change | Now in Phase 5: Close |
| Phase 5 | Phase Update | The SSAC is proposing a particular behavior in the processing of DNS search lists and encourages all ICANN Supporting Organizations and Advisory Committees, the IETF, and the DNS operations community to consider that behavior and to comment on it. ICANN acknowledges this invitation and will take the proposed behavior into consideration when discussing search list processing and when search lists are used within ICANN's IT systems. Beyond this, we do not believe that there is any action required from ICANN Board or staff to address SAC064 R-1. |
| Phase 5 | Board Update | Board consideration of the advice is still required. Status provided in 19 October 2016 letter from ICANN Board Chair to SSAC Chair (https://www.icann.org/en/system/files/correspondence/crocker-to-faltstrom-19oct16-en.pdf). There is outstanding work on this advice item, and it will be addressed through the BAR pilot process. |
| Phase 2 | Phase Update | Thank you for providing your feedback to ICANN staff's understanding of request of the advice received by the ICANN Board from the SSAC. We have updated the status of the advice Items based on the approved understanding statements. The attached document includes a list of advice items with these recent status updates, and below is a summary of the 12 items considered complete: SAC064: SSAC Advisory on DNS "Search List" Processing – Recommendation 1. |
| Phase 2 | AP Feedback | SSAC confirmed the understanding. |
| Phase 2 | Board Understanding | Our understanding of SAC064 R-1 is that the SSAC is proposing a particular behavior in the processing of DNS search lists and encourages all ICANN Supporting Organizations and Advisory Committees, the IETF, and the DNS operations community to consider that behavior and to comment on it. ICANN acknowledges this invitation and will take the proposed behavior into consideration when discussing search list processing and when search lists are used within ICANN's IT systems. Beyond this, we do not believe that there is any action required from ICANN Board or staff to address SAC064 R-1. |
| Phase 1 | Phase Update | SSAC published SAC064: SSAC Advisory on DNS "Search List" Processing: https://www.icann.org/en/system/files/files/sac-064-en.pdf. |
