MFC r335133:

MFC r335133:
  In m_megapullup() use m_getjcl() to allocate 9k or 16k mbuf when requested.

  It is better to try allocate a big mbuf, than just silently drop a big
  packet. A better solution could be reworking of libalias modules to be
  able use m_copydata()/m_copyback() instead of requiring the single
  contiguous buffer.

  PR:		229006

git-svn-id: svn://svn.freebsd.org/base/stable/10@335474 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f