I have two old fs boxes, 1.2.24 on ubuntu 14.04 and 1.2.17 on centos 6.5 , both of them have mod_dingaling installed and one google voice account configured. Both boses have worked for a few years w/o any problems. A couple of months ago suddenly GV@1.2.24 stopped working, but GV@1.2.17 still works. If I put the same account to 1.2.17, it works so it's not the GV account problem. I looked at the source code, and don't see a lot changes in mod_dingaling in the past few years. Anyway I installed the latest FS but no luck. Debugging shows no usable candidate can be found: mod_dingaling.c:3608 candidate 74.125.39.41:19305 PASS ACL wan.auto mod_dingaling.c:3662 Acceptable rtp Candidate 74.125.39.41:19305 mod_dingaling.c:3578 Candidate Error! mod_dingaling.c:3578 Candidate Error! mod_dingaling.c:3578 Candidate Error! Please help.