www.ktmtoluca.com has both AAAA (IPv6) and A (IPv4) records. While they both appear to be accessible on the network, we have detected that they produce differing results when sent an ACME HTTP validation request. This may indicate that the IPv4 and IPv6 addresses may unintentionally point to different servers, which would cause validation to fail.
[Address Type=IPv4,Server=nginx,HTTP Status=404] vs [Address Type=IPv6,Server=Apache,HTTP Status=300]
Requests made to the domain
Request to: www.ktmtoluca.com/2607:f1c0:100f:f000::242, Result: [Address Type=IPv6,Server=Apache,HTTP Status=300], Issue:
Trace:
@0ms: Making a request to http://www.ktmtoluca.com/.well-known/acme-challenge/letsdebug-test (using initial IP 2607:f1c0:100f:f000::242)
@0ms: Dialing 2607:f1c0:100f:f000::242
@76ms: Server response: HTTP 300 Multiple Choices
Request to: www.ktmtoluca.com/52.88.64.31, Result: [Address Type=IPv4,Server=nginx,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://www.ktmtoluca.com/.well-known/acme-challenge/letsdebug-test (using initial IP 52.88.64.31)
@0ms: Dialing 52.88.64.31
@159ms: Server response: HTTP 404 Not Found
A and AAAA records found for this domain
www.ktmtoluca.com. 0 IN A 52.88.64.31
www.ktmtoluca.com. 0 IN AAAA 2607:f1c0:100f:f000::242
Challenge update failures for www.ktmtoluca.com in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/3705678
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": Invalid response from http://www.ktmtoluca.com/.well-known/acme-challenge/qtkpLpApF3hi_UTroBHSzBOcEpGsXa_kgPTW8pBVKDQ: "<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>300 Multiple Choices</title>
</head><body>
<h1>Multiple C"
The IANA public suffix is the TLD of the Registered Domain
The TLD for www.ktmtoluca.com is: com
The current status.io status for Let's Encrypt
Operational