IPMP_ADDRLIST_SIZE
IPMP_ADDRLIST_SIZE(adlistp->al_naddr), adlistp));
IPMP_ADDRLIST_SIZE(adlist4p->al_naddr), adlist4p);
IPMP_ADDRLIST_SIZE(adlist6p->al_naddr), adlist6p));
if (len < IPMP_ADDRLIST_SIZE(0) ||
len < IPMP_ADDRLIST_SIZE(adlistp->al_naddr))
adlistp = malloc(IPMP_ADDRLIST_SIZE(naddr));