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Cisco Bug: CSCvv65303 - macOS 11: DNS resolution broken system-wide after resume from sleep with VPN connected

Last Modified

Sep 29, 2020

Products (1)

  • Cisco AnyConnect Secure Mobility Client

Known Affected Releases


Description (partial)

DNS resolution fails globally after system resume from sleep.

- Platform: macOS 11.
- VPN tunnel established with tunnel-all policy before putting the system to sleep.
- Before putting the system to sleep, launch at least one app that initiates DNS flows even while system is asleep, e.g. the native Stocks app.
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