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Cisco Bug: CSCvu19710 - macOS - Unable to modify the IP forwarding table error when using WiFi Calling (FaceTime Calling)

Last Modified

Aug 17, 2020

Products (1)

  • Cisco AnyConnect Secure Mobility Client

Known Affected Releases

4.7(4056) 4.8(2042) 4.8(3036)

Description (partial)

Symptom:
When using WiFi Calling (FaceTime Calling), macOS endpoints may receive the following error:

---> The VPN client was unable to modify the IP forwarding table.  A VPN connection will not be established.  Please restart your computer or device, then try again.

Conditions:
- macOS - 10.14.x/10.15.x
- WiFi FaceTime Calling
- AnyConnect 4.7x/4.8.x
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
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