\fBresubmit\fR actions are ignored.
.
.IP \fBset_tunnel\fB:\fIid\fR
-If outputting to a port that encapsulates the packet in a tunnel and supports
-an identifier (such as GRE), sets the identifier to \fBid\fR.
+.IQ \fBset_tunnel64\fB:\fIid\fR
+If outputting to a port that encapsulates the packet in a tunnel and
+supports an identifier (such as GRE), sets the identifier to \fBid\fR.
+If the \fBset_tunnel\fR form is used and \fIid\fR fits in 32 bits,
+then this uses an action extension that is supported by Open vSwitch
+1.0 and later. Otherwise, if \fIid\fR is a 64-bit value, it requires
+Open vSwitch 1.1 or later.
.
.IP \fBdrop_spoofed_arp\fR
Stops processing further actions, if the packet being processed is an
.IP
Example: \fBload:55\->NXM_NX_REG2[0..5]\fR loads value 55 (bit pattern
\fB110111\fR) into bits 0 through 5, inclusive, in register 2.
+.
+.IP "\fBmultipath(\fIfields\fB, \fIbasis\fB, \fIalgorithm\fB, \fIn_links\fB, \fIarg\fB, \fIdst\fB[\fIstart\fB..\fIend\fB])\fR"
+Hashes \fIfields\fR using \fIbasis\fR as a universal hash parameter,
+then the applies multipath link selection \fIalgorithm\fR (with
+parameter \fIarg\fR) to choose one of \fIn_links\fR output links
+numbered 0 through \fIn_links\fR minus 1, and stores the link into
+\fIdst\fB[\fIstart\fB..\fIend\fB]\fR, which must be an NXM register as
+described above.
+.IP
+Currently, \fIfields\fR must be either \fBeth_src\fR or
+\fBsymmetric_l4\fR and \fIalgorithm\fR must be one of \fBmodulo_n\fR,
+\fBhash_threshold\fR, \fBhrw\fR, and \fBiter_hash\fR. Only
+the \fBiter_hash\fR algorithm uses \fIarg\fR.
+.IP
+Refer to \fBnicira\-ext.h\fR for more details.
.RE
.
.IP