t_msgbuilder.c build_uac_req() has:
if(headers == NULL || headers->len < 15
|| _strnstr(headers->s, "Max-Forwards:", headers->len) == NULL) {
maxfwd_len = MAXFWD_HEADER_LEN;
} else {
maxfwd_len = 0;
}
It should add Max-Forwards if it missing, but for some reason it does not
happen with ACK.
-- Juha