str_ipaddr
printf("%s", str_ipaddr((struct sockaddr *)(m_saddr + 1)));
printf(" %s", str_ipaddr((struct sockaddr *)(m_daddr + 1)));
str_ipaddr((struct sockaddr *)(natt_oai + 1)));
str_ipaddr((struct sockaddr *)(natt_oar + 1)));
printf("%s%s ", str_ipaddr(sa),
printf("%s%s ", str_ipaddr(sa),
static char *str_ipaddr(struct sockaddr *);