Log Message:
net/bind918: update to 9.18.18

--- 9.18.18 released ---

6220.	[func]		Deprecate the 'dialup' and 'heartbeat-interval'
			options. [GL #3700]

6219.	[bug]		Ignore 'max-zone-ttl' on 'dnssec-policy insecure'.
			[GL #4032]

6215.	[protocol]	Return REFUSED to GSS-API TKEY requests if GSS-API
			support is not configured. [GL #4225]

6213.	[bug]		Mark a primary server as temporarily unreachable if the
			TCP connection attempt times out. [GL #4215]

6212.	[bug]		Don't process detach and close netmgr events when
			the netmgr has been paused. [GL #4200]