Bind can have multiple master servers. I don’t understand why it wouldn’t continue answering queries when the master is down either, you only need the master to

Bind can have multiple master servers. I don’t understand why it wouldn’t continue answering queries when the master is down either, you only need the master to answer IXFR/AXFR. Maybe your SOA has some really short times in it? I’m not great with bind but I’ve been doing a lot with it lately (using it to feed large DNS servers) so you’re welcome to email me if you want help.