ip6_un1            79 netinet/ip6.h  		} ip6_un1;
ip6_un1            87 netinet/ip6.h  #define ip6_flow	ip6_ctlun.ip6_un1.ip6_un1_flow
ip6_un1            88 netinet/ip6.h  #define ip6_plen	ip6_ctlun.ip6_un1.ip6_un1_plen
ip6_un1            89 netinet/ip6.h  #define ip6_nxt		ip6_ctlun.ip6_un1.ip6_un1_nxt
ip6_un1            90 netinet/ip6.h  #define ip6_hlim	ip6_ctlun.ip6_un1.ip6_un1_hlim
ip6_un1            91 netinet/ip6.h  #define ip6_hops	ip6_ctlun.ip6_un1.ip6_un1_hlim