--- /dev/null
+--- a/pppd/sys-linux.c
++++ b/pppd/sys-linux.c
+@@ -203,7 +203,7 @@ static int driver_is_old = 0;
+ static int restore_term = 0; /* 1 => we've munged the terminal */
+ static struct termios inittermios; /* Initial TTY termios */
+
+-int new_style_driver = 0;
++static const int new_style_driver = 1;
+
+ static char loop_name[20];
+ static unsigned char inbuf[512]; /* buffer for chars read from loopback */
+@@ -220,8 +220,8 @@ static int looped; /* 1 if using loop
+ static int link_mtu; /* mtu for the link (not bundle) */
+
+ static struct utsname utsname; /* for the kernel version */
+-static int kernel_version;
+ #define KVERSION(j,n,p) ((j)*1000000 + (n)*1000 + (p))
++static const int kernel_version = KVERSION(2,6,37);
+
+ #define MAX_IFS 100
+
+@@ -1414,11 +1414,12 @@ int ccp_fatal_error (int unit)
+ *
+ * path_to_procfs - find the path to the proc file system mount point
+ */
+-static char proc_path[MAXPATHLEN];
+-static int proc_path_len;
++static char proc_path[MAXPATHLEN] = "/proc";
++static int proc_path_len = 5;
+
+ static char *path_to_procfs(const char *tail)
+ {
++#if 0
+ struct mntent *mntent;
+ FILE *fp;
+
+@@ -1440,6 +1441,7 @@ static char *path_to_procfs(const char *
+ fclose (fp);
+ }
+ }
++#endif
+
+ strlcpy(proc_path + proc_path_len, tail,
+ sizeof(proc_path) - proc_path_len);
+@@ -2098,11 +2100,13 @@ int ppp_available(void)
+ "ppp.o exists in /lib/modules/`uname -r`/net.\n"
+ "See README.linux file in the ppp distribution for more details.\n";
+
++#if 0
+ /* get the kernel version now, since we are called before sys_init */
+ uname(&utsname);
+ osmaj = osmin = ospatch = 0;
+ sscanf(utsname.release, "%d.%d.%d", &osmaj, &osmin, &ospatch);
+ kernel_version = KVERSION(osmaj, osmin, ospatch);
++#endif
+
+ fd = open("/dev/ppp", O_RDWR);
+ #if 0
+@@ -2121,7 +2125,9 @@ int ppp_available(void)
+ }
+ #endif /* 0 */
+ if (fd >= 0) {
++#if 0
+ new_style_driver = 1;
++#endif
+
+ /* XXX should get from driver */
+ driver_version = 2;
+@@ -2168,6 +2174,7 @@ int ppp_available(void)
+
+ if (ok && ((ifr.ifr_hwaddr.sa_family & ~0xFF) != ARPHRD_PPP))
+ ok = 0;
++ return ok;
+
+ /*
+ * This is the PPP device. Validate the version of the driver at this
+@@ -2659,6 +2666,7 @@ get_pty(master_fdp, slave_fdp, slave_nam
+ }
+ #endif /* TIOCGPTN */
+
++#if 0
+ if (sfd < 0) {
+ /* the old way - scan through the pty name space */
+ for (i = 0; i < 64; ++i) {
+@@ -2677,6 +2685,7 @@ get_pty(master_fdp, slave_fdp, slave_nam
+ }
+ }
+ }
++#endif
+
+ if (sfd < 0)
+ return 0;
--- /dev/null
+--- a/pppd/pppd.h
++++ b/pppd/pppd.h
+@@ -308,7 +308,6 @@ extern int holdoff; /* Dead time before
+ extern bool holdoff_specified; /* true if user gave a holdoff value */
+ extern bool notty; /* Stdin/out is not a tty */
+ extern char *pty_socket; /* Socket to connect to pty */
+-extern char *record_file; /* File to record chars sent/received */
+ extern bool sync_serial; /* Device is synchronous serial device */
+ extern int maxfail; /* Max # of unsuccessful connection attempts */
+ extern char linkname[MAXPATHLEN]; /* logical name for link */
+--- a/pppd/tty.c
++++ b/pppd/tty.c
+@@ -144,7 +144,7 @@ char *disconnect_script = NULL; /* Scrip
+ char *welcomer = NULL; /* Script to run after phys link estab. */
+ char *ptycommand = NULL; /* Command to run on other side of pty */
+ bool notty = 0; /* Stdin/out is not a tty */
+-char *record_file = NULL; /* File to record chars sent/received */
++static char *const record_file = NULL; /* File to record chars sent/received */
+ int max_data_rate; /* max bytes/sec through charshunt */
+ bool sync_serial = 0; /* Device is synchronous serial device */
+ char *pty_socket = NULL; /* Socket to connect to pty */
+@@ -200,8 +200,10 @@ option_t tty_options[] = {
+ "Send and receive over socket, arg is host:port",
+ OPT_PRIO | OPT_DEVNAM },
+
++#if 0
+ { "record", o_string, &record_file,
+ "Record characters sent/received to file", OPT_PRIO },
++#endif
+
+ { "crtscts", o_int, &crtscts,
+ "Set hardware (RTS/CTS) flow control",
--- /dev/null
+--- a/pppd/utils.c
++++ b/pppd/utils.c
+@@ -30,6 +30,7 @@
+
+ #define RCSID "$Id: utils.c,v 1.24 2004/11/04 10:02:26 paulus Exp $"
+
++#define _BSD_SOURCE
+ #include <stdio.h>
+ #include <ctype.h>
+ #include <stdlib.h>
+@@ -67,15 +68,10 @@ extern char *strerror();
+
+ static void logit __P((int, char *, va_list));
+ static void log_write __P((int, char *));
+-static void vslp_printer __P((void *, char *, ...));
+ static void format_packet __P((u_char *, int, void (*) (void *, char *, ...),
+ void *));
+
+-struct buffer_info {
+- char *ptr;
+- int len;
+-};
+-
++#ifndef __UCLIBC__
+ /*
+ * strlcpy - like strcpy/strncpy, doesn't overflow destination buffer,
+ * always leaves destination null-terminated (for len > 0).
+@@ -113,6 +109,7 @@ strlcat(dest, src, len)
+
+ return dlen + strlcpy(dest + dlen, src, (len > dlen? len - dlen: 0));
+ }
++#endif
+
+
+ /*
+@@ -129,17 +126,7 @@ slprintf __V((char *buf, int buflen, cha
+ va_list args;
+ int n;
+
+-#if defined(__STDC__)
+ va_start(args, fmt);
+-#else
+- char *buf;
+- int buflen;
+- char *fmt;
+- va_start(args);
+- buf = va_arg(args, char *);
+- buflen = va_arg(args, int);
+- fmt = va_arg(args, char *);
+-#endif
+ n = vslprintf(buf, buflen, fmt, args);
+ va_end(args);
+ return n;
+@@ -148,7 +135,6 @@ slprintf __V((char *buf, int buflen, cha
+ /*
+ * vslprintf - like slprintf, takes a va_list instead of a list of args.
+ */
+-#define OUTCHAR(c) (buflen > 0? (--buflen, *buf++ = (c)): 0)
+
+ int
+ vslprintf(buf, buflen, fmt, args)
+@@ -157,298 +143,14 @@ vslprintf(buf, buflen, fmt, args)
+ char *fmt;
+ va_list args;
+ {
+- int c, i, n;
+- int width, prec, fillch;
+- int base, len, neg, quoted;
+- unsigned long val = 0;
+- char *str, *f, *buf0;
+- unsigned char *p;
+- char num[32];
+- time_t t;
+- u_int32_t ip;
+- static char hexchars[] = "0123456789abcdef";
+- struct buffer_info bufinfo;
+-
+- buf0 = buf;
+- --buflen;
+- while (buflen > 0) {
+- for (f = fmt; *f != '%' && *f != 0; ++f)
+- ;
+- if (f > fmt) {
+- len = f - fmt;
+- if (len > buflen)
+- len = buflen;
+- memcpy(buf, fmt, len);
+- buf += len;
+- buflen -= len;
+- fmt = f;
+- }
+- if (*fmt == 0)
+- break;
+- c = *++fmt;
+- width = 0;
+- prec = -1;
+- fillch = ' ';
+- if (c == '0') {
+- fillch = '0';
+- c = *++fmt;
+- }
+- if (c == '*') {
+- width = va_arg(args, int);
+- c = *++fmt;
+- } else {
+- while (isdigit(c)) {
+- width = width * 10 + c - '0';
+- c = *++fmt;
+- }
+- }
+- if (c == '.') {
+- c = *++fmt;
+- if (c == '*') {
+- prec = va_arg(args, int);
+- c = *++fmt;
+- } else {
+- prec = 0;
+- while (isdigit(c)) {
+- prec = prec * 10 + c - '0';
+- c = *++fmt;
+- }
+- }
+- }
+- str = 0;
+- base = 0;
+- neg = 0;
+- ++fmt;
+- switch (c) {
+- case 'l':
+- c = *fmt++;
+- switch (c) {
+- case 'd':
+- val = va_arg(args, long);
+- if (val < 0) {
+- neg = 1;
+- val = -val;
+- }
+- base = 10;
+- break;
+- case 'u':
+- val = va_arg(args, unsigned long);
+- base = 10;
+- break;
+- default:
+- *buf++ = '%'; --buflen;
+- *buf++ = 'l'; --buflen;
+- --fmt; /* so %lz outputs %lz etc. */
+- continue;
+- }
+- break;
+- case 'd':
+- i = va_arg(args, int);
+- if (i < 0) {
+- neg = 1;
+- val = -i;
+- } else
+- val = i;
+- base = 10;
+- break;
+- case 'u':
+- val = va_arg(args, unsigned int);
+- base = 10;
+- break;
+- case 'o':
+- val = va_arg(args, unsigned int);
+- base = 8;
+- break;
+- case 'x':
+- case 'X':
+- val = va_arg(args, unsigned int);
+- base = 16;
+- break;
+- case 'p':
+- val = (unsigned long) va_arg(args, void *);
+- base = 16;
+- neg = 2;
+- break;
+- case 's':
+- str = va_arg(args, char *);
+- break;
+- case 'c':
+- num[0] = va_arg(args, int);
+- num[1] = 0;
+- str = num;
+- break;
+- case 'm':
+- str = strerror(errno);
+- break;
+- case 'I':
+- ip = va_arg(args, u_int32_t);
+- ip = ntohl(ip);
+- slprintf(num, sizeof(num), "%d.%d.%d.%d", (ip >> 24) & 0xff,
+- (ip >> 16) & 0xff, (ip >> 8) & 0xff, ip & 0xff);
+- str = num;
+- break;
+-#if 0 /* not used, and breaks on S/390, apparently */
+- case 'r':
+- f = va_arg(args, char *);
+-#ifndef __powerpc__
+- n = vslprintf(buf, buflen + 1, f, va_arg(args, va_list));
+-#else
+- /* On the powerpc, a va_list is an array of 1 structure */
+- n = vslprintf(buf, buflen + 1, f, va_arg(args, void *));
+-#endif
+- buf += n;
+- buflen -= n;
+- continue;
+-#endif
+- case 't':
+- time(&t);
+- str = ctime(&t);
+- str += 4; /* chop off the day name */
+- str[15] = 0; /* chop off year and newline */
+- break;
+- case 'v': /* "visible" string */
+- case 'q': /* quoted string */
+- quoted = c == 'q';
+- p = va_arg(args, unsigned char *);
+- if (fillch == '0' && prec >= 0) {
+- n = prec;
+- } else {
+- n = strlen((char *)p);
+- if (prec >= 0 && n > prec)
+- n = prec;
+- }
+- while (n > 0 && buflen > 0) {
+- c = *p++;
+- --n;
+- if (!quoted && c >= 0x80) {
+- OUTCHAR('M');
+- OUTCHAR('-');
+- c -= 0x80;
+- }
+- if (quoted && (c == '"' || c == '\\'))
+- OUTCHAR('\\');
+- if (c < 0x20 || (0x7f <= c && c < 0xa0)) {
+- if (quoted) {
+- OUTCHAR('\\');
+- switch (c) {
+- case '\t': OUTCHAR('t'); break;
+- case '\n': OUTCHAR('n'); break;
+- case '\b': OUTCHAR('b'); break;
+- case '\f': OUTCHAR('f'); break;
+- default:
+- OUTCHAR('x');
+- OUTCHAR(hexchars[c >> 4]);
+- OUTCHAR(hexchars[c & 0xf]);
+- }
+- } else {
+- if (c == '\t')
+- OUTCHAR(c);
+- else {
+- OUTCHAR('^');
+- OUTCHAR(c ^ 0x40);
+- }
+- }
+- } else
+- OUTCHAR(c);
+- }
+- continue;
+- case 'P': /* print PPP packet */
+- bufinfo.ptr = buf;
+- bufinfo.len = buflen + 1;
+- p = va_arg(args, unsigned char *);
+- n = va_arg(args, int);
+- format_packet(p, n, vslp_printer, &bufinfo);
+- buf = bufinfo.ptr;
+- buflen = bufinfo.len - 1;
+- continue;
+- case 'B':
+- p = va_arg(args, unsigned char *);
+- for (n = prec; n > 0; --n) {
+- c = *p++;
+- if (fillch == ' ')
+- OUTCHAR(' ');
+- OUTCHAR(hexchars[(c >> 4) & 0xf]);
+- OUTCHAR(hexchars[c & 0xf]);
+- }
+- continue;
+- default:
+- *buf++ = '%';
+- if (c != '%')
+- --fmt; /* so %z outputs %z etc. */
+- --buflen;
+- continue;
+- }
+- if (base != 0) {
+- str = num + sizeof(num);
+- *--str = 0;
+- while (str > num + neg) {
+- *--str = hexchars[val % base];
+- val = val / base;
+- if (--prec <= 0 && val == 0)
+- break;
+- }
+- switch (neg) {
+- case 1:
+- *--str = '-';
+- break;
+- case 2:
+- *--str = 'x';
+- *--str = '0';
+- break;
+- }
+- len = num + sizeof(num) - 1 - str;
+- } else {
+- len = strlen(str);
+- if (prec >= 0 && len > prec)
+- len = prec;
+- }
+- if (width > 0) {
+- if (width > buflen)
+- width = buflen;
+- if ((n = width - len) > 0) {
+- buflen -= n;
+- for (; n > 0; --n)
+- *buf++ = fillch;
+- }
+- }
+- if (len > buflen)
+- len = buflen;
+- memcpy(buf, str, len);
+- buf += len;
+- buflen -= len;
+- }
+- *buf = 0;
+- return buf - buf0;
+-}
++ int ret;
+
+-/*
+- * vslp_printer - used in processing a %P format
+- */
+-static void
+-vslp_printer __V((void *arg, char *fmt, ...))
+-{
+- int n;
+- va_list pvar;
+- struct buffer_info *bi;
+-
+-#if defined(__STDC__)
+- va_start(pvar, fmt);
+-#else
+- void *arg;
+- char *fmt;
+- va_start(pvar);
+- arg = va_arg(pvar, void *);
+- fmt = va_arg(pvar, char *);
+-#endif
+-
+- bi = (struct buffer_info *) arg;
+- n = vslprintf(bi->ptr, bi->len, fmt, pvar);
+- va_end(pvar);
+-
+- bi->ptr += n;
+- bi->len -= n;
++ ret = vsnprintf(buf, buflen, fmt, args);
++ buf[buflen - 1] = 0;
++ return ret;
+ }
+
++
+ #ifdef unused
+ /*
+ * log_packet - format a packet and log it.
--- /dev/null
+--- a/pppd/sys-linux.c
++++ b/pppd/sys-linux.c
+@@ -2237,6 +2237,7 @@ int ppp_available(void)
+
+ void logwtmp (const char *line, const char *name, const char *host)
+ {
++#if 0
+ struct utmp ut, *utp;
+ pid_t mypid = getpid();
+ #if __GLIBC__ < 2
+@@ -2302,6 +2303,7 @@ void logwtmp (const char *line, const ch
+ close (wtmp);
+ }
+ #endif
++#endif
+ }
+
+
--- /dev/null
+--- a/pppd/main.c
++++ b/pppd/main.c
+@@ -879,14 +879,17 @@ struct protocol_list {
+ const char *name;
+ } protocol_list[] = {
+ { 0x21, "IP" },
++#if 0
+ { 0x23, "OSI Network Layer" },
+ { 0x25, "Xerox NS IDP" },
+ { 0x27, "DECnet Phase IV" },
+ { 0x29, "Appletalk" },
+ { 0x2b, "Novell IPX" },
++#endif
+ { 0x2d, "VJ compressed TCP/IP" },
+ { 0x2f, "VJ uncompressed TCP/IP" },
+ { 0x31, "Bridging PDU" },
++#if 0
+ { 0x33, "Stream Protocol ST-II" },
+ { 0x35, "Banyan Vines" },
+ { 0x39, "AppleTalk EDDP" },
+@@ -900,8 +903,11 @@ struct protocol_list {
+ { 0x49, "Serial Data Transport Protocol (PPP-SDTP)" },
+ { 0x4b, "SNA over 802.2" },
+ { 0x4d, "SNA" },
++#endif
+ { 0x4f, "IP6 Header Compression" },
++#if 0
+ { 0x51, "KNX Bridging Data" },
++#endif
+ { 0x53, "Encryption" },
+ { 0x55, "Individual Link Encryption" },
+ { 0x57, "IPv6" },
+@@ -912,12 +918,15 @@ struct protocol_list {
+ { 0x65, "RTP IPHC Compressed non-TCP" },
+ { 0x67, "RTP IPHC Compressed UDP 8" },
+ { 0x69, "RTP IPHC Compressed RTP 8" },
++#if 0
+ { 0x6f, "Stampede Bridging" },
+ { 0x73, "MP+" },
+ { 0xc1, "NTCITS IPI" },
++#endif
+ { 0xfb, "single-link compression" },
+ { 0xfd, "Compressed Datagram" },
+ { 0x0201, "802.1d Hello Packets" },
++#if 0
+ { 0x0203, "IBM Source Routing BPDU" },
+ { 0x0205, "DEC LANBridge100 Spanning Tree" },
+ { 0x0207, "Cisco Discovery Protocol" },
+@@ -929,15 +938,19 @@ struct protocol_list {
+ { 0x0231, "Luxcom" },
+ { 0x0233, "Sigma Network Systems" },
+ { 0x0235, "Apple Client Server Protocol" },
++#endif
+ { 0x0281, "MPLS Unicast" },
+ { 0x0283, "MPLS Multicast" },
++#if 0
+ { 0x0285, "IEEE p1284.4 standard - data packets" },
+ { 0x0287, "ETSI TETRA Network Protocol Type 1" },
++#endif
+ { 0x0289, "Multichannel Flow Treatment Protocol" },
+ { 0x2063, "RTP IPHC Compressed TCP No Delta" },
+ { 0x2065, "RTP IPHC Context State" },
+ { 0x2067, "RTP IPHC Compressed UDP 16" },
+ { 0x2069, "RTP IPHC Compressed RTP 16" },
++#if 0
+ { 0x4001, "Cray Communications Control Protocol" },
+ { 0x4003, "CDPD Mobile Network Registration Protocol" },
+ { 0x4005, "Expand accelerator protocol" },
+@@ -948,8 +961,10 @@ struct protocol_list {
+ { 0x4023, "RefTek Protocol" },
+ { 0x4025, "Fibre Channel" },
+ { 0x4027, "EMIT Protocols" },
++#endif
+ { 0x405b, "Vendor-Specific Protocol (VSP)" },
+ { 0x8021, "Internet Protocol Control Protocol" },
++#if 0
+ { 0x8023, "OSI Network Layer Control Protocol" },
+ { 0x8025, "Xerox NS IDP Control Protocol" },
+ { 0x8027, "DECnet Phase IV Control Protocol" },
+@@ -958,7 +973,9 @@ struct protocol_list {
+ { 0x8031, "Bridging NCP" },
+ { 0x8033, "Stream Protocol Control Protocol" },
+ { 0x8035, "Banyan Vines Control Protocol" },
++#endif
+ { 0x803d, "Multi-Link Control Protocol" },
++#if 0
+ { 0x803f, "NETBIOS Framing Control Protocol" },
+ { 0x8041, "Cisco Systems Control Protocol" },
+ { 0x8043, "Ascom Timeplex" },
+@@ -967,18 +984,24 @@ struct protocol_list {
+ { 0x8049, "Serial Data Control Protocol (PPP-SDCP)" },
+ { 0x804b, "SNA over 802.2 Control Protocol" },
+ { 0x804d, "SNA Control Protocol" },
++#endif
+ { 0x804f, "IP6 Header Compression Control Protocol" },
++#if 0
+ { 0x8051, "KNX Bridging Control Protocol" },
++#endif
+ { 0x8053, "Encryption Control Protocol" },
+ { 0x8055, "Individual Link Encryption Control Protocol" },
+ { 0x8057, "IPv6 Control Protovol" },
+ { 0x8059, "PPP Muxing Control Protocol" },
+ { 0x805b, "Vendor-Specific Network Control Protocol (VSNCP)" },
++#if 0
+ { 0x806f, "Stampede Bridging Control Protocol" },
+ { 0x8073, "MP+ Control Protocol" },
+ { 0x80c1, "NTCITS IPI Control Protocol" },
++#endif
+ { 0x80fb, "Single Link Compression Control Protocol" },
+ { 0x80fd, "Compression Control Protocol" },
++#if 0
+ { 0x8207, "Cisco Discovery Protocol Control" },
+ { 0x8209, "Netcs Twin Routing" },
+ { 0x820b, "STP - Control Protocol" },
+@@ -987,24 +1010,29 @@ struct protocol_list {
+ { 0x8281, "MPLSCP" },
+ { 0x8285, "IEEE p1284.4 standard - Protocol Control" },
+ { 0x8287, "ETSI TETRA TNP1 Control Protocol" },
++#endif
+ { 0x8289, "Multichannel Flow Treatment Protocol" },
+ { 0xc021, "Link Control Protocol" },
+ { 0xc023, "Password Authentication Protocol" },
+ { 0xc025, "Link Quality Report" },
++#if 0
+ { 0xc027, "Shiva Password Authentication Protocol" },
+ { 0xc029, "CallBack Control Protocol (CBCP)" },
+ { 0xc02b, "BACP Bandwidth Allocation Control Protocol" },
+ { 0xc02d, "BAP" },
++#endif
+ { 0xc05b, "Vendor-Specific Authentication Protocol (VSAP)" },
+ { 0xc081, "Container Control Protocol" },
+ { 0xc223, "Challenge Handshake Authentication Protocol" },
+ { 0xc225, "RSA Authentication Protocol" },
+ { 0xc227, "Extensible Authentication Protocol" },
++#if 0
+ { 0xc229, "Mitsubishi Security Info Exch Ptcl (SIEP)" },
+ { 0xc26f, "Stampede Bridging Authorization Protocol" },
+ { 0xc281, "Proprietary Authentication Protocol" },
+ { 0xc283, "Proprietary Authentication Protocol" },
+ { 0xc481, "Proprietary Node ID Authentication Protocol" },
++#endif
+ { 0, NULL },
+ };
+