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

[Peter Russel]

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.
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