set a minimum set of socket options as soon as opning a raw socket to avoid receiving packets without ancillary data intentionally.
set a minimum set of socket options as soon as opning a raw socket
to avoid receiving packets without ancillary data intentionally.

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame