Scope:
All Barracuda Load Balancers in use with all Barracuda Web Filters, firmware versions 4.4.0.
Answer:
Using Direct Server Return mode on the Barracuda Load Balancer requires a non-arping loop-back adapter for each real server, for each relevant virtual IP. When load-balancing Barracuda Web Filters, a manual configuration by our technical support team is required on each Barracuda Web Filter.
Link to This Page:
https://campus.barracuda.com/solution/50160000000Ib4dAAC