snp_addr
in_route_add(&ppp->snp.snp_addr,
return (a->snp_addr.s_addr == b->snp_addr.s_addr)? 1 : 0;
in_route_add(&snp->snp_addr,
offsetof(struct sockaddr_npppd, snp_addr),
snp->snp_addr.s_addr = htonl(range->addr);
#define ppp_framed_ip_address snp.snp_addr