If I am not mistaken, this was a DNS-related issue where both servers are trying to reach each other using DNS (name-to-IP resolution) during replication. But since you're using local host file (lmhost), both servers did not successfully read or resolved the name-to-IP query.
By right, ACS need DNS to resolve peer name for backup/replication purposes. DNS is also requred if your ACS integrated to MS-AD.
Since you're using local host file, have you remove the DNS entry in your NIC's TCP/IP confg? But this could be not the case at all.
BenefitsDocumentationPrerequisiteImage Download LinksLimitationsSupported PlatformsLicense RequirementsTopologyStep-By-Step ConfigurationConfigure Virtual ServiceActivate the virtual service and configure guest IPsConfiguring UTD (Service Plane)Configurin...
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...