Cisco Bug: CSCvt93875 - DNS response processing fails with Umbrella enabled after socket leak observed
Oct 13, 2020
- Cisco SD-WAN
Known Affected Releases
Symptom: A socket leak may be observed when Umbrella DNS is enabled for DNScrypt/DNS query redirectioni Conditions: Umbrella DNS is enabled and the DNS resolution of the Umbrella domain server (api.opendns.com) is successful but there is no route to the server IP returned. When this occurs, sockets are leaked (as seen from 'show sockets'), eventually leading to DNS response processing failures.
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