External DNS server cannot resolve external domain name when using public IP inside internal network

I use nslookup to query from a computer inside internal network. it can successfully resolve the external domain name if I use private IP of my DNS server. > www.ust.hk Server: 192.168.28.58 Address: 192.168.28.58#53 Non-authoritative answer: Name: www.ust.hk Address: 143.89.14.1 However, if I use the public IP of my DNS server inside internal network, I…

Is there a way to tell if two identically-named ZFS snapshots are actually identical?

How can you tell if two ZFS snapshots are identical or simply named the same? Say I have two computers named host-a and host-b. Also assume that host-a has a ZFS dataset named /tank/mydataset. On host-a, I could: zfs snapshot tank/[email protected]’ and then I could ‘zfs send tank/[email protected] | ssh host-b zfs receive tank/mydataset This…