Description
Barry Rich has a complex home network which involves hosting CUCM and FCSDK (Trials) on VMs on 2 macs. He then has Cisco devics, Bria UA's hanging of the CUCM and routes calls to them from his trials.
Problem
Barry found that sometimes video calls would not set-up from to the 9971 phone, sometimes video was one-way sometimes not all. On a WebEx we looked into and found there were ping issues (packets going missing) so it looked a network level problem.
Resolution
t turns out that Apple added some ARP cache validation to Mavericks and this causes issues connectivity issue. see details and the fix in the URL:
Make sure you reboot after the fix is applied.
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