Log Message:
net/bind918: updte to 9.18.20

Note: B.ROOT-SERVERS.NET's addresses will be changed November 27, 2023.

9.18.20 (2023-11-15)

6280.	[bug]		Fix missing newlines in the output of "rndc nta -dump".
			[GL !8454]

6277.	[bug]		Take into account local authoritative zones when
			falling back to serve-stale. [GL #4355]

6275.	[bug]		Fix assertion failure when using lock-file configuration
			option together -X argument to named. [GL #4386]

6274.	[bug]		The 'lock-file' file was being removed when it
			shouldn't have been making it ineffective if named was
			started 3 or more times. [GL #4387]

6271.	[bug]		Fix a shutdown race in dns__catz_update_cb(). [GL #4381]

6269.	[maint]		B.ROOT-SERVERS.NET addresses are now 170.247.170.2 and
			2801:1b8:10::b. [GL #4101]

6267.	[func]		The timeouts for resending zone refresh queries over UDP
			were lowered to enable named to more quickly determine
			that a primary is down. [GL #4260]

6265.	[bug]		Don't schedule resign operations on the raw version
			of an inline-signing zone. [GL #4350]

6261.	[bug]		Fix a possible assertion failure on an error path in
			resolver.c:fctx_query(), when using an uninitialized
			link. [GL #4331]

6254.	[cleanup]	Add semantic patch to do an explicit cast from char
			to unsigned char in ctype.h class of functions.
			[GL #4327]

6252.	[test]		Python system tests have to be executed by invoking
			pytest directly. Executing them with the legacy test
			runner is no longer supported. [GL #4250]

6250.	[bug]		The wrong covered value was being set by
			dns_ncache_current for RRSIG records in the returned
			rdataset structure. This resulted in TYPE0 being
			reported as the covered value of the RRSIG when dumping
			the cache contents. [GL #4314]