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Cisco Bug: CSCvi65381 - There is no audio in IPv6 only mode

Last Modified

Apr 20, 2018

Products (1)

  • Cisco IP Phone 8800 Series with Multiplatform Firmware

Known Affected Releases


Description (partial)

There is no audio in IPv6 only mode

1.8811 and 6851 in Dual mode boot up.---OK, phones both have ipv4 and ipv6 address.
2. change 8811 and 6851 to IPv6 only mode, phones boot up.---OK, phones registered successfully using IPv6 address. phone web and LCD show IP mode : IPv6 only.
3.8811 make a call to 6851.---KO, there is no audio.Through wireshark trace, in caller 8811 INVITE SDP message , the altc include IPv4 address(previous acquired in dual mode), and in callee 200OK sdp message, the c value is ipv4 address (previous acquired in dual mode)
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