Hi pgnet(?),
I think you posted on the wrong mailing list :)
I'll reply here and include unbound-users also.
If you want to reply further please drop nsd-users and let us continue
the discussion only on the unbound-users mailing list as to not generate
noise here.
On 07/06/2021 21:31, PGNet Dev via nsd-users wrote:
On my server, I config
cat /etc/resolv.conf
nameserver 127.0.0.1
, where unbound 1.13.1 listens @
server:
interface: 127.0.0.1@53
if I set up forward-first in unbound config,
forward-zone:
name: "."
forward-first: yes
forward-addr: <server.1.ipv.6>
forward-addr: <server.1.ipv.4>
...
forward-addr: <server.n.ipv.6>
forward-addr: <server.n.ipv.4>
what's the order policy for those forward-addr's?
Is the forward-addr used randomly, or sequentially, selected from that
list?
Randomly between the fastest servers (in the <400ms band). Unbound will
keep probing the other servers to keep updated metrics for them in case
they become fast enough (<400ms). You can read more about it at
https://www.nlnetlabs.nl/documentation/unbound/info-timeout/.
Is there any unbound preference for IPv4 vs IPv6 forward-addrs?
There are the 'prefer-ip4:' and 'prefer-ip6:' options if you want to do
that.
Does the preference respect /etc/gai.conf?
No.
Best regards,
-- George
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