Don't hang if "Use DNS" is off. (Bug 1318.) Thanks to Rasmus
Sten who reported the bug and proposed an alternate fix. * src/server/connections.c (login_request): Don't hang if the "Use DNS" option is false. (Bug 1318). Log a warning message if isc_resolve_remote() fails. (src/server/testsuite/lyskomd.0/bug-1318.exp): New file. Test the "Use DNS: off" configuration option.
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