-extern int debug; /* Debug flag */
-extern int ifunit; /* Interface unit number */
-extern char ifname[]; /* Interface name */
-extern int fd; /* Device file descriptor */
-extern int s; /* socket descriptor */
-extern char hostname[]; /* hostname */
-extern u_char outpacket_buf[]; /* buffer for outgoing packets */
-extern int phase; /* See values below */
+
+extern int hungup; /* Physical layer has disconnected */
+extern int ifunit; /* Interface unit number */
+extern char ifname[]; /* Interface name */
+extern int fd; /* Serial device file descriptor */
+extern char hostname[]; /* Our hostname */
+extern u_char outpacket_buf[]; /* Buffer for outgoing packets */
+extern int phase; /* Current state of link - see values below */
+extern int baud_rate; /* Current link speed in bits/sec */
+extern char *progname; /* Name of this program */
+
+/*
+ * Variables set by command-line options.
+ */
+
+extern int debug; /* Debug flag */
+extern int kdebugflag; /* Tell kernel to print debug messages */
+extern int default_device; /* Using /dev/tty or equivalent */
+extern char devnam[]; /* Device name */
+extern int crtscts; /* Use hardware flow control */
+extern int modem; /* Use modem control lines */
+extern int inspeed; /* Input/Output speed requested */
+extern u_int32_t netmask; /* IP netmask to set on interface */
+extern int lockflag; /* Create lock file to lock the serial dev */
+extern int nodetach; /* Don't detach from controlling tty */
+extern char *connector; /* Script to establish physical link */
+extern char *disconnector; /* Script to disestablish physical link */
+extern char user[]; /* Username for PAP */
+extern char passwd[]; /* Password for PAP */
+extern int auth_required; /* Peer is required to authenticate */
+extern int proxyarp; /* Set up proxy ARP entry for peer */
+extern int persist; /* Reopen link after it goes down */
+extern int uselogin; /* Use /etc/passwd for checking PAP */
+extern int lcp_echo_interval; /* Interval between LCP echo-requests */
+extern int lcp_echo_fails; /* Tolerance to unanswered echo-requests */
+extern char our_name[]; /* Our name for authentication purposes */
+extern char remote_name[]; /* Peer's name for authentication */
+extern int usehostname; /* Use hostname for our_name */
+extern int disable_defaultip; /* Don't use hostname for default IP adrs */
+extern char *ipparam; /* Extra parameter for ip up/down scripts */
+extern int cryptpap; /* Others' PAP passwords are encrypted */