There are some prombles in the query log

[马可]

I filled confused when I read the query log,
02-Aug-2021 14:45:49.477 queries: client @0x7f40b00104c8 192.168.100.126#38290 (235.91.251.148.origin.asn.cymru.com): query: 235.91.251.148.origin.asn.cymru.com IN A +E(0) (192.168.100.8) 02-Aug-2021 14:45:49.507 queries: client @0x7f40b4000cc8 192.168.100.126#39323 (235.93.70.216.origin.asn.cymru.com): query: 235.93.70.216.origin.asn.cymru.com IN A +E(0) (192.168.100.8) 02-Aug-2021 14:45:49.704 queries: client @0x7f40b4000cc8 192.168.100.126#55226 (236.112.24.104.origin.asn.cymru.com): query: 236.112.24.104.origin.asn.cymru.com IN A +E(0) (192.168.100.8) 02-Aug-2021 14:45:49.808 queries: client @0x7f40b4000cc8 192.168.100.126#40445 (236.130.13.85.origin.asn.cymru.com): query: 236.130.13.85.origin.asn.cymru.com IN A +E(0) (192.168.100.8) 02-Aug-2021 14:45:49.868 queries: client @0x7f40b00104c8 192.168.100.126#41471 (236.133.255.54.origin.asn.cymru.com): query: 236.133.255.54.origin.asn.cymru.com IN A +E(0) (192.168.100.8) 02-Aug-2021 14:45:49.915 queries: client @0x7f40b4000cc8 192.168.100.126#55357 (236.138.233.54.origin.asn.cymru.com): query: 236.138.233.54.origin.asn.cymru.com IN A +E(0) (192.168.100.8)
As shown above, the queries come from the client whose ip is 192.168.100.126, there are several questions for me:


All queries are from the same client whose ip is 192.168.100.126, but why the port which each query from is so different?

I disabled the recursion of bind 9 ,but all the Recursion Desired flag was set '+', this confused me.

The client object identifiers are not the same although all queries are from the same client.

One more thing, I use dlz to allows zone data to be retrieved from postgresql.
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