Restrictions

The following restrictions apply:

• The IP_TRANSPARENT option must be set before the socket is bound.
• The IP_TRANSPARENT option cannot be cleared after bind on accelerated sockets.
• IP_TRANSPARENT sockets cannot be accelerated if they are bound to port 0 or to INADDR_ANY.
• IP_TRANSPARENT sockets cannot be passed to the kernel stack when bound to a port that is in the list specified by EF_TCP_FORCE_REUSEPORT.
• Reverse path filters must be disabled on all interfaces. The user should check the value returned from the following files:

  # cat /proc/sys/net/ipv4/conf/all/rp_filter# cat /proc/sys/net/ipv4/conf/lo/rp_filter

• When using the rss:transparent_active mode (see below), EF_CLUSTER_NAME must be explicitly set by the process sharing the cluster and the stack cannot be named by either EF_NAME or onload_set_stackname().