Symptom

Communications with CSSM portal not working when using IPv6 HTTP proxy Device reports: %LICMGR-3-LOG_SMART_LIC_COMM_FAILED: (pid=xxxx) Communications failure with the Cisco Smart So ftware Manager (CSSM) : Fail to send out Call Home HTTP message

Conditions

* Customer using Smart Licensing (or Smart Licensing using Policy) * Communications between the device (Product Instance) and CSSM (portal) is configured to use CALLHOME * Callhome is configured to use HTTP proxy * HTTP proxy server is configured using IPv6 address

Workaround

Instead of referencing the the HTTP proxy using IPv6, use HOSTNAME and define static IPv6 host config example: Instead of: *********** callhome ... transport http proxy server X:X::X:X port 8080 *********** use: *********** ipv6 host test.proxy.com X:X::X:X callhome ... transport http proxy server test.proxy.com port 8080 ***********

Further Problem Description