Bind 9 Administrator Reference Manual

Chapter 6. BIND 9 Conﬁguration Reference

interval, once every heartbeat-interval and hopefully during the one call. It also suppresses some

of the normal zone maintenance trafﬁc. The default is no.

The dialup option may also be speciﬁed in the view and zone statements, in which case it overrides

the global dialup option.

If the zone is a master zone then the server will send out a NOTIFY request to all the slaves. This

will trigger the zone serial number check in the slave (providing it supports NOTIFY) allowing the

slave to verify the zone while the connection is active.

If the zone is a slave or stub zone, then the server will suppress the regular "zone up to date"

(refresh) queries and only perform them when the heartbeat-interval expires in addition to sending

NOTIFY requests.

Finer control can be achieved by using notify which only sends NOTIFY messages,

notify-passive which sends NOTIFY messages and suppresses the normal refresh queries,

refresh which suppresses normal refresh processing and send refresh queries when the

heartbeat-interval expires and passive which just disables normal refresh processing.

fake-iquery

In BIND 8, this option was used to enable simulating the obsolete DNS query type IQUERY. BIND

9 never does IQUERY simulation.

fetch-glue

This option is obsolete. In BIND 8, fetch-glue yes caused the server to attempt to fetch glue

resource records it didn’t have when constructing the additional data section of a response. This is

now considered a bad idea and BIND 9 never does it.

has-old-clients

This option was incorrectly implemented in BIND 8, and is ignored by BIND 9. To achieve the

intended effect of has-old-clients yes, specify the two separate options auth-nxdomain yes and

rfc2308-type1 no instead.

host-statistics

In BIND 8, this enables keeping of statistics for every host that the nameserver interacts with. Not

implemented in BIND 9.

maintain-ixfr-base

This option is obsolete. It was used in BIND 8 to determine whether a transaction log was kept for

Incremental Zone Transfer. BIND 9 maintains a transaction log whenever possible. If you need to

disable outgoing incremental zone transfers, use provide-ixfr no.