Sockstat use netstat tcp/udp socket print, and fstat tcp/udp socket print, but it just specify all of IPPROTO_IP and IPPROTO_IPV6 sockets for fstat. Now IPv6 socket also use raw socket, but only netstat don't print it, so now they are printed as empty entries in sockstat output. (From FreeBSD-current)
when in_ifinit() fails.
upgrade to 0.85.