error: read (in tcp s): Connection reset by peer

fresh install, yesterday 16/01/23, from github source, thus v1.17.2, compile options:

./configure --prefix=/usr --sysconfdir=/etc --disable-static --enable-tfo-client --enable-tfo-server --with-libevent --with-libhiredis --enable-cachedb --with-pidfile=/run/unbound.pid

I’m getting a reasonable amount of errors (27 in the last 10 hours) like:
unbound[688:1] error: read (in tcp s): Connection reset by peer for 2600:9000:5307:6800::1 port 53
unbound[688:2] error: read (in tcp s): Connection reset by peer for 2600:9000:5304:2400::1 port 53
unbound[688:2] error: read (in tcp s): Connection reset by peer for 2600:9000:5303:c700::1 port 53
unbound[688:1] error: read (in tcp s): Connection reset by peer for 2600:9000:5306:8600::1 port 53
unbound[688:0] error: read (in tcp s): Connection reset by peer for 2600:9000:5300:1b00::1 port 53
unbound[688:3] error: read (in tcp s): Connection reset by peer for 2600:9000:5305:2900::1 port 53
unbound[688:0] error: read (in tcp s): Connection reset by peer for 205.251.195.199 port 53

als these errors are IPv6, except one (removed entries are duplicate IPv6 entries).

2600:9000:5307:6800::1 → ns-1896.awsdns-45.co.uk.

2600:9000:5304:2400::1 → ns-1060.awsdns-04.org.

2600:9000:5303:c700::1 → ns-967.awsdns-56.net.

2600:9000:5306:8600::1 → ns-1670.awsdns-16.co.uk.

2600:9000:5300:1b00::1 → ns-27.awsdns-03.com.

2600:9000:5305:2900::1 → ns-1321.awsdns-37.org.

205.251.195.199 → ns-967.awsdns-56.net

as you can see, all of them are awsdns ns servers

  • anyone else noticing this?
  • unbound setting I need to add/change to avoid this?
  • bug?

as always, thanks for your time and effort.