Hi Alan, @dcc5543c03 recently committed to github was: } - snprintf(buffer + 12 + 32, sizeof(buffer) - 45, + snprintf(buffer + 45, sizeof(buffer) - 45, " V=3 M=%s", inst->retry_msg); } I may have miscounted, but shouldn't that be: snprintf(buffer + 44, sizeof(buffer) - 44, ^^^ ^^^ ? Kind regards, James -- James J J Hooper Senior Network Specialist, University of Bristol http://wireless.bristol.ac.uk --