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Cisco Bug: CSCus37834 - ASA anyconnect prefers ASA's IPv4 address over IPv6

Last Modified

Jul 26, 2016

Products (1)

  • Cisco AnyConnect Secure Mobility Client

Known Affected Releases

3.1(5170) 3.1(5182) 3.1(6073)

Description (partial)

Symptom:
AnyConnect vpn secure mobility client prefers IPv4 address over IPv6 to connect to the ASA secure gateway when the ASA's fully qualified domain name resolves to both IPv4 and IPv6 address.
If the ASA's fqdn resolves to both ipv6 and ipv4 then the anyconnect vpn client initiates a connection using ASA's ipv4 address instead of the ipv6

Conditions:
1) ASA's fully qualified domain resolves to both IPv4 and IPv6 addresses 
2) Client machine's physical adapter has both IPv4 and IPv6 addresses
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Bug Details Include

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  • Status
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