Preview Tool

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)

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

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
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.