_MAX_ALIGNMENT
msg.msg_controllen = sizeof (*cmsg) + _MAX_ALIGNMENT +
sizeof (*ipi6) + _MAX_ALIGNMENT + sizeof (*cmsg);
bufspace += sizeof (struct cmsghdr) + _MAX_ALIGNMENT +
hoplimit_space + _MAX_ALIGNMENT;
bufspace += sizeof (struct cmsghdr) + _MAX_ALIGNMENT +
pktinfo_space + _MAX_ALIGNMENT;
msg.msg_controllen = sizeof (*cmsgp) + _MAX_ALIGNMENT +
sizeof (*ipip) + _MAX_ALIGNMENT + sizeof (*cmsgp);
bufspace += sizeof (struct cmsghdr) + _MAX_ALIGNMENT +
hoplimit_space + _MAX_ALIGNMENT;
bufspace += sizeof (struct cmsghdr) + _MAX_ALIGNMENT +
rthdr_space + _MAX_ALIGNMENT;
bufspace += sizeof (struct cmsghdr) + _MAX_ALIGNMENT +
pktinfo_space + _MAX_ALIGNMENT;
bufspace = sizeof (struct cmsghdr) + _MAX_ALIGNMENT +
hoplimit_space + _MAX_ALIGNMENT;
bufspace += sizeof (struct cmsghdr) + _MAX_ALIGNMENT +
rthdr_space + _MAX_ALIGNMENT;
bufspace += sizeof (struct cmsghdr) + _MAX_ALIGNMENT +
pktinfo_space + _MAX_ALIGNMENT;
ckp->ckp_size = P2ROUNDUP(ckp->ckp_size, _MAX_ALIGNMENT) + bp->buf_size;
{ 0, 0, _MAX_ALIGNMENT }, /* BUFFER */
#if (_MAX_ALIGNMENT < 8)
#define ALIGNSZ _MAX_ALIGNMENT