As per the document,
- round_robin_upstreams: Round-robin queries across all the configured upstream servers. Without this option, Stubby will use each upstream server sequentially until it becomes unavailable and then move on to use the next.
But Stubby DNS resolvers are changed for every request like round_robin. We are missing anything in the Stubby configurations? Please comment.
We have provided the environment details below,
(OpenWrt v18.06.8, r7989-82fbd85747)
root@OpenWrt:~# uci show stubby
stubby.global=stubby
stubby.global.manual='0'
stubby.global.trigger='wan'
stubby.global.tls_query_padding_blocksize='128'
stubby.global.appdata_dir='/var/lib/stubby'
stubby.global.edns_client_subnet_private='1'
stubby.global.idle_timeout='10000'
stubby.global.listen_address='127.0.0.1@5453' '0::1@5453'
stubby.global.round_robin_upstreams='0'
stubby.global.log_level='7'
stubby.global.dns_transport='GETDNS_TRANSPORT_TLS' 'GETDNS_TRANSPORT_UDP' 'GETDNS_TRANSPORT_TCP'
stubby.@resolver[0]=resolver
stubby.@resolver[0].address='1.1.1.1'
stubby.@resolver[0].tls_auth_name='cloudflare-dns.com'
stubby.@resolver[1]=resolver
stubby.@resolver[1].address='1.0.0.1'
stubby.@resolver[1].tls_auth_name='cloudflare-dns.com'
root@OpenWrt:~# stubby -V
Stubby 0.2.6
Executed the below command from the OpenWrt terminal,
while true; do dig @127.0.0.1 -p 5453 google.com; sleep 11; done
Stubby Debug Logs:
root@OpenWrt:~# logread -f | grep stubby
Thu Aug 31 12:46:40 2023 daemon.err stubby[9661]: [12:46:40.746907] STUBBY: 1.0.0.1 : Conn closed: TLS - Resps= 1, Timeouts = 0, Curr_auth =Success, Keepalive(ms)= 10000
Thu Aug 31 12:46:40 2023 daemon.err stubby[9661]: [12:46:40.746941] STUBBY: 1.0.0.1 : Upstream : TLS - Resps= 11, Timeouts = 0, Best_auth =Success
Thu Aug 31 12:46:40 2023 daemon.err stubby[9661]: [12:46:40.746954] STUBBY: 1.0.0.1 : Upstream : TLS - Conns= 11, Conn_fails= 0, Conn_shuts= 9, Backoffs = 0
Thu Aug 31 12:46:41 2023 daemon.err stubby[9661]: [12:46:41.757714] STUBBY: 1.1.1.1 : Conn opened: TLS - Opportunistic Profile
Thu Aug 31 12:46:41 2023 daemon.err stubby[9661]: [12:46:41.856423] STUBBY: 1.1.1.1 : Verify passed : TLS
Thu Aug 31 12:46:51 2023 daemon.err stubby[9661]: [12:46:51.883197] STUBBY: 1.1.1.1 : Conn closed: TLS - Resps= 1, Timeouts = 0, Curr_auth =Success, Keepalive(ms)= 10000
Thu Aug 31 12:46:51 2023 daemon.err stubby[9661]: [12:46:51.883233] STUBBY: 1.1.1.1 : Upstream : TLS - Resps= 10, Timeouts = 0, Best_auth =Success
Thu Aug 31 12:46:51 2023 daemon.err stubby[9661]: [12:46:51.883246] STUBBY: 1.1.1.1 : Upstream : TLS - Conns= 10, Conn_fails= 0, Conn_shuts= 9, Backoffs = 0
Thu Aug 31 12:46:52 2023 daemon.err stubby[9661]: [12:46:52.894108] STUBBY: 1.0.0.1 : Conn opened: TLS - Opportunistic Profile
Thu Aug 31 12:47:03 2023 daemon.err stubby[9661]: [12:47:03.013683] STUBBY: 1.0.0.1 : Conn closed: TLS - Resps= 1, Timeouts = 0, Curr_auth =Success, Keepalive(ms)= 10000
Thu Aug 31 12:47:03 2023 daemon.err stubby[9661]: [12:47:03.013718] STUBBY: 1.0.0.1 : Upstream : TLS - Resps= 12, Timeouts = 0, Best_auth =Success
Thu Aug 31 12:47:03 2023 daemon.err stubby[9661]: [12:47:03.013731] STUBBY: 1.0.0.1 : Upstream : TLS - Conns= 12, Conn_fails= 0, Conn_shuts= 10, Backoffs = 0
Thu Aug 31 12:47:04 2023 daemon.err stubby[9661]: [12:47:04.024454] STUBBY: 1.1.1.1 : Conn opened: TLS - Opportunistic Profile
Thu Aug 31 12:47:14 2023 daemon.err stubby[9661]: [12:47:14.189701] STUBBY: 1.1.1.1 : Conn closed: TLS - Resps= 1, Timeouts = 0, Curr_auth =Success, Keepalive(ms)= 10000
Thu Aug 31 12:47:14 2023 daemon.err stubby[9661]: [12:47:14.189735] STUBBY: 1.1.1.1 : Upstream : TLS - Resps= 11, Timeouts = 0, Best_auth =Success
Thu Aug 31 12:47:14 2023 daemon.err stubby[9661]: [12:47:14.189749] STUBBY: 1.1.1.1 : Upstream : TLS - Conns= 11, Conn_fails= 0, Conn_shuts= 10, Backoffs = 0
Please help us to proceed further.
