DNS request prefer IPv6 only

[ierdelyi]

Welcome

• Yes, I'm using a binary release within 2 latest releases.
• Yes, I've searched similar issues on GitHub and didn't find any.
• Yes, I've included all information below (version, config, etc).

What did you expect to see?

See this git issue: kchristensen/udm-le#93
The lego use ipv6 dns server only.

What did you see instead?

1; paramter to force ipv4 or ipv6
OR/AND
2 ; method to check all available dns servers
OR/AND
3; use DNS server whic was definied in command line

How do you use lego?

Library

Reproduction steps

Please see this isseues:
kchristensen/udm-le#94
kchristensen/udm-le#93

Version of lego

lego version 4.16.1 linux/arm64

Logs

2024/05/02 11:56:12 [INFO] [portal.owncompany.com] acme: Waiting for DNS record propagation. 2024/05/02 11:56:14 [INFO] [portal.owncompany.com] acme: Cleaning DNS-01 challenge 2024/05/02 11:56:16 [INFO] Deactivating auth: https://acme-v02.api.letsencrypt.org/acme/authz-v3/345720099897 2024/05/02 11:56:16 Could not obtain certificates: error: one or more domains had a problem: [portal.owncompany.com] propagation: time limit exceeded: last error: DNS call error: read udp [2001:db8:1000::1]:51859->[2606:4700:50::adf5:3a38]:53: i/o timeout [ns=adi.ns.cloudflare.com.:53, question='_acme-challenge.portal.owncompany.com. IN TXT'] initial(): Starting udm-le systemd timer

Go environment (if applicable)

$ go version && go env
# paste output here

[ldez]

Duplicate of #1801