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(From ISC Bugs 47555) dhcpd: failover.c...:scrubbing lease for ... emitted unexpectedly

From BUG ticket #47555 - I understand the intent was to fix this in 4.4.2 but it seems not to have had a GL issue opened for it.

Originally from Customer Support ticket #12731

This message is logged by scrub_lease() in server/failover.c:

void scrub_lease(struct lease* lease, const char *file, int line) { log_debug ("%s(%d):scrubbing lease for %s, hostname: %s", file, line,

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It seems to be the only log_debug statement in the failover code that is not surrounded by a "#if defined (DEBUG_FAILOVER_MESSAGES)" statement, which seems to be an oversight.

The code that introduced this logging stanza was added to ISC DHCP with this change:

  • Leases are now scrubbed of certain prior use information when pool re-balancing reassigns them from one FO peer to the other. This corrects an issue where leases that were offered but not used by the client retained the client hostname from the original client. Thanks to Pavel Polacek, Jan Evangelista Purkyne University for reporting the issue. [ISC-Bugs #42008]