/* try to open raw socket to check kernel */
mISDNsocket = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE);
if (mISDNsocket < 0) {
/* try to open raw socket to check kernel */
mISDNsocket = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE);
if (mISDNsocket < 0) {
- fprintf(stderr, "Cannot open mISDN due to '%s'. (Does your Kernel support socket based mISDN?)\n", strerror(errno));
+ fprintf(stderr, "Cannot open mISDN due to '%s'. (Does your Kernel support socket based mISDN? Protocol family is %d.)\n", strerror(errno), PF_ISDN);