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Cleanup the errors and removed deadcode along the way. The leaves some error laying around, mostly about commenting exported identifier. We should look hard if those really are needed.
secondary
secondary enables serving a zone retrieved from a primary server.
Syntax
secondary [zones...]
zoneszones it should be authoritative for. If empty, the zones from the configuration block are used. Note that without a remote address to get the zone from, the above is not that useful.
A working syntax would be:
secondary [zones...] {
transfer from address
[transfer to address]
}
transfer fromspecifies from which address to fetch the zone. It can be specified multiple times; if one does not work, another will be tried.transfer tocan be enabled to allow this secondary zone to be transferred again.
Examples
secondary [zones...] {
transfer from 10.0.1.1
transfer from 10.1.2.1
}