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[Bug nss/22349] New: [RFE] user specific hosts entries


https://sourceware.org/bugzilla/show_bug.cgi?id=22349

            Bug ID: 22349
           Summary: [RFE] user specific hosts entries
           Product: glibc
           Version: unspecified
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: nss
          Assignee: unassigned at sourceware dot org
          Reporter: riehecky at fnal dot gov
  Target Milestone: ---

Is it possible to add a new NSS that reads something like ~/.hosts for user
specific host aliases?

Ideally, this would permit users to add their own local resolution for
specified hosts, while preventing this from leaking into other user's
resolution.

Use Case:
- a web developer wants to override the resolution of a hostname to test a
specific node in a round robin cluster.
- an IOT developer has a pile of devices with IPs that may change depending on
test conditions.

Concerns:
- preventing services like NSCD from caching resolution of user specific
results is mandatory so that no one poisons the hosts.db

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