inc_laddr
#define inp_laddr inp_inc.inc_laddr
inc.inc_laddr = ip->ip_dst;
inc.inc_laddr = ip->ip_src;
sc->sc_inc.inc_laddr = inc->inc_laddr;
ip->ip_src = sc->sc_inc.inc_laddr;
add.laddr = sc->sc_inc.inc_laddr.s_addr;
add.laddr = inc->inc_laddr.s_addr;
sc->sc_inc.inc_laddr = inc->inc_laddr;
inp->inp_laddr = sc->sc_inc.inc_laddr;
inp->inp_laddr = sc->sc_inc.inc_laddr;
inet_ntoa(pcb.inp_inc.inc_laddr),
memcpy(&sin4[TCPDROP_LOCAL].sin_addr, &inc->inc_laddr,
sizeof inc->inc_laddr);