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- $TTL 300
- @ IN SOA serverb.backend.lab.example.com. root.serverb.backend.lab.example.com. (
- 2020041806 ;serial number
- 1H ;refresh secondary
- 5m ;retry refresh
- 1w ;expire zone
- 1m ) ;cache time-to-live for negative answers
- ; owner TTL CL type RDATA
- 600 IN NS serverb
- ; IN MX 10 serverb.backend.lab.example.com.
- ; IN A 192.168.0.11
- servera IN A 192.168.0.10
- serverb IN A 192.168.0.11
- serverc IN A 192.168.0.12
- serverd IN A 192.168.0.13
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