1_in6_cksum:_inet6_cksum
2_mbuf_data
3_mbuf_data_len
4_mbuf_inet6_cksum
5_mbuf_len
6_mbuf_next
7_mbuf_nextpkt
8_mbuf_pkthdr_header
9_mbuf_pkthdr_len
10_mbuf_pkthdr_rcvif
11_mbuf_pkthdr_setheader
12_mbuf_setlen
13_mbuf_setnextpkt
14_mbuf_type
15_sysctl_register_fixed
16