sppp_ipcp_opt_name
addlog("%s ", sppp_ipcp_opt_name(*p));
addlog(" %s ", sppp_ipcp_opt_name(*p));
addlog("%s ", sppp_ipcp_opt_name(*p));
addlog("%s ", sppp_ipcp_opt_name(*p));
const char *sppp_ipcp_opt_name(u_char opt);