mld_hdr
#define mld6_hdr mld_hdr
if (icmp6len < sizeof(struct mld_hdr))
if (icmp6len < sizeof(struct mld_hdr)) /* necessary? */
struct mld_hdr *mldh;
mldh = (struct mld_hdr *)(mtod(m, caddr_t) + off);
IP6_EXTHDR_GET(mldh, struct mld_hdr *, m, off, sizeof(*mldh));
struct mld_hdr *mldh;
mh->m_pkthdr.len = sizeof(struct ip6_hdr) + sizeof(struct mld_hdr);
md->m_len = sizeof(struct mld_hdr);
mldh = mtod(md, struct mld_hdr *);
sizeof(struct mld_hdr));