Bind 9 Administrator Reference Manual

Chapter 6. BIND 9 Configuration Reference
query-source-v6 option. If address is * or is omitted, a wildcard IP address (INADDR_ANY) will be
used. If port is * or is omitted, a random unprivileged port will be used. The defaults are
query-source address * port *;
query-source-v6 address * port *
Note: The address specified in the query-source option is used for both UDP and TCP queries, but
the port applies only to UDP queries. TCP queries always use a random unprivileged port.
6.2.14.6. Zone Transfers
BIND has mechanisms in place to facilitate zone transfers and set limits on the amount of load that
transfers place on the system. The following options apply to zone transfers.
also-notify
Defines a global list of IP addresses of name servers that are also sent NOTIFY messages whenever
a fresh copy of the zone is loaded, in addition to the servers listed in the zone’s NS records. This
helps to ensure that copies of the zones will quickly converge on stealth servers. If an also-notify
list is given in a zone statement, it will override the options also-notify statement. When a zone
notify statement is set to no, the IP addresses in the global also-notify list will not be sent NOTIFY
messages for that zone. The default is the empty list (no global notification list).
max-transfer-time-in
Inbound zone transfers running longer than this many minutes will be terminated. The default is 120
minutes (2 hours).
max-transfer-idle-in
Inbound zone transfers making no progress in this many minutes will be terminated. The default is
60 minutes (1 hour).
max-transfer-time-out
Outbound zone transfers running longer than this many minutes will be terminated. The default is
120 minutes (2 hours).
max-transfer-idle-out
Outbound zone transfers making no progress in this many minutes will be terminated. The default is
60 minutes (1 hour).
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