etherip_header
struct etherip_header *eth;
M_PREPEND(m, sizeof(struct etherip_header), M_NOWAIT);
eth = mtod(m, struct etherip_header *);
struct etherip_header *eip;
n = sizeof(struct etherip_header) +
eip = mtod(m, struct etherip_header *);
m_adj_decap(m, sizeof(struct etherip_header));
sizeof(struct etherip_header) +
sizeof(struct etherip_header) +
sizeof(struct etherip_header) +