I:check that NOTIFY is sent at the end of NSEC3 chain generation (128)
I:sleeping ....
I:sleeping ....
I:sleeping ....
Only in dig.out.ns3.test128 (missing from dig.out.ns2.test128):
> nsec3chain-test.	10	IN	SOA	ns2.nsec3chain-test. hostmaster.nsec3chain-test. 98 3600 1200 864000 1200
Only in dig.out.ns2.test128 (missing from dig.out.ns3.test128):
< nsec3chain-test.	10	IN	SOA	ns2.nsec3chain-test. hostmaster.nsec3chain-test. 102 3600 1200 864000 1200
I:failed

Looking at named.run the IXFR was still in progress when the SOA request was made.