Which statement about the restrictions of redirection on Cisco Cloud Web Security tunnels on ISR4000 Series Router is true?
A. The cws-tunnel out command can be configured up a maximum of three WAN interfaces
B. User authentication (through NTLM) is supported
C. Access lists based on object groups are supported in whitelisting and redirect list configuration
D. IPv6 is not supported
E. Multiple access lists are supported for whitelisting
Ref: https://community.cisco.com/t5/security-documents/cisco-cloud-web-security-cws-tunnel-connector-on-isr-4k-faq/ta-p/3157110#toc-hId-15066312
The correct answer is D
IPv6 is not supported
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_data_cws/configuration/xe-3s/sec-data-cws-xe-3s-book.pdf