Using "My Domain" instead of predefined domains at dynv6.com: (workaround required in case of subdomain)

[spblinux]

Dyndns provider dynv6.com provides predefined domains like dynv6.net. Additionally it is possible to use any domain or subdomain where you are authorized to set NS records pointing to the dns servers of dynv6.com. This is called "My Domain".

domains.txt: a.mydomain.tld *.a.mydomain.tld (applying for a wildcard certificate for a.mydomain.tld and its subdomains)

Bug: hook.sh, create_acme_challenge_host(), sets in this case the variable
acme_challenge_hostname="_acme-challenge.a"
And this results that the nameserver at dynv6.com creates a TXT record
_acme-challenge.a.a.mydomain.tld

So letsencrypt fails because it cannot fetch TXT record
_acme-challenge.a.mydomain.tld

---

Workaround:
Edit ".env" file and add
DYNV6_IS_MYDOMAIN=true

and apply the patch below to hook.sh:

--- hook.sh.orig<------>2023-12-13 16:29:08.544354245 +0100
+++ hook.sh<--->2023-12-13 16:56:36.490748269 +0100
@@ -2,6 +2,8 @@
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)".
 DOMAIN=${2}
 TOKEN_VALUE=${4}
+# "My Domains" of dynv6.com in use? (default: false)
+DYNV6_IS_MYDOMAIN=${DYNV6_IS_MYDOMAIN:-false}
 DYNV6_DOMAINS=(dns.army dns.navy dynv6.net v6.army v6.navy v6.rocks) # TODO: Make this dynamic
 DYNV6_APIBASE="https://dynv6.com/api/v2/zones"
 DYNV6_TOKEN=${DYNV6_TOKEN}
@@ -97,7 +99,11 @@
     break
   fi
   done
-  acme_challenge_hostname="${acme_challenge_hostname_with_dot: :-1}"  # remove last dot
+  if [ $DYNV6_IS_MYDOMAIN == "false" ]; then
+   acme_challenge_hostname="${acme_challenge_hostname_with_dot: :-1}"  # remove last dot
+  else
+   acme_challenge_hostname="_acme-challenge"
+  fi
   _test_echo "${acme_challenge_hostname}"
 }

hook_sh_diff.zip