[sr-dev] rtpengine ipv6 still showing up

Hi again. I've had some users complain that they cannot hangup calls and have to wait for the default SIP timeout before the client hangs up. Looking at the kamailio logs, I noticed something strange regarding RTPengine. What's the deal with the [::]:0 address? Could this be the cause of the issues users have reported? I also see in siremis accounting that users indeed try to repeatedly send out the BYE message to hang up the call but siremis shows a bunch of 481 responses from kamailio. I have commented out ipv6 in the /etc/default/rtp/ngcp-rtpengine-daemon file yet I still see this in the logs: Sep 26 00:55:19 rtpengine[2950]: [gj0LMNqHnWDBc15BiNAWD7UH29LZfjZD] --- Tag '', created 1:00 ago, in dialogue with '(none)' Sep 26 00:55:19 rtpengine[2950]: [gj0LMNqHnWDBc15BiNAWD7UH29LZfjZD] ------ Media #1, port 30034 <> [::]:0 , 0 p, 0 b, 0 e Sep 26 00:55:19 rtpengine[2950]: [gj0LMNqHnWDBc15BiNAWD7UH29LZfjZD] ------ Media #1, port 30035 <> [::]:0 (RTCP), 0 p, 0 b, 0 e Sep 26 00:55:19 rtpengine[2950]: [gj0LMNqHnWDBc15BiNAWD7UH29LZfjZD] --- Tag 'D77HuXhJbqiBg.pBF3LkwC8411VT2Vye', created 1:00 ago, in dialogue with '' Sep 26 00:55:19 rtpengine[2950]: [gj0LMNqHnWDBc15BiNAWD7UH29LZfjZD] ------ Media #1, port 30044 <> 190.56.xx.xx:63572, 0 p, 0 b, 0 e Sep 26 00:55:19 rtpengine[2950]: [gj0LMNqHnWDBc15BiNAWD7UH29LZfjZD] ------ Media #1, port 30045 <> 190.56.xx.xx:3058 (RTCP), 0 p, 0 b, 0 e I imagine I'm doing something wrong in the config but I'm not sure why I see an ipv6 address and why the BYEs receive 481 responses. Any clues as to where I should look? Thanks, Peter