+.
+.IP \fBtable=\fInumber\fR
+If specified, limits the flow manipulation and flow dump commands to
+only apply to the table with the given \fInumber\fR.
+\fInumber\fR is a number between 0 and 254, inclusive.
+.
+Behavior varies if \fBtable\fR is not specified. For flow table
+modification commands without \fB\-\-strict\fR, the switch will choose
+the table for these commands to operate on. For flow table
+modification commands with \fB\-\-strict\fR, the command will operate
+on any single matching flow in any table; it will do nothing if there
+are matches in more than one table. The \fBdump-flows\fR and
+\fBdump-aggregate\fR commands will gather statistics about flows from
+all tables.
+.IP
+When this field is specified in \fBadd-flow\fR, \fBadd-flows\fR,
+\fBmod-flows\fR and \fBdel-flows\fR commands, it activates a Nicira
+extension to OpenFlow, which as of this writing is only known to be
+implemented by Open vSwitch.
+.
+.PP
+The following shorthand notations are also available:
+.
+.IP \fBip\fR
+Same as \fBdl_type=0x0800\fR.
+.
+.IP \fBicmp\fR
+Same as \fBdl_type=0x0800,nw_proto=1\fR.
+.
+.IP \fBtcp\fR
+Same as \fBdl_type=0x0800,nw_proto=6\fR.
+.
+.IP \fBudp\fR
+Same as \fBdl_type=0x0800,nw_proto=17\fR.
+.
+.IP \fBarp\fR
+Same as \fBdl_type=0x0806\fR.
+.
+.PP
+The following field assignments require support for the NXM (Nicira
+Extended Match) extension to OpenFlow. When one of these is specified,
+\fBovs\-ofctl\fR will automatically attempt to negotiate use of this
+extension. If the switch does not support NXM, then \fBovs\-ofctl\fR
+will report a fatal error.
+.
+.IP \fBarp_sha=\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fR
+.IQ \fBarp_tha=\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fR
+When \fBdl_type\fR specifies ARP, \fBarp_sha\fR and \fBarp_tha\fR match
+the source and target hardware address, respectively. An address is
+specified as 6 pairs of hexadecimal digits delimited by colons.
+.
+.IP \fBipv6_src=\fIipv6\fR[\fB/\fInetmask\fR]
+.IQ \fBipv6_dst=\fIipv6\fR[\fB/\fInetmask\fR]
+When \fBdl_type\fR is 0x86dd (possibly via shorthand, e.g., \fBipv6\fR
+or \fBtcp6\fR), matches IPv6 source (or destination) address \fIipv6\fR,
+which may be specified as defined in RFC 2373. The preferred format is
+\fIx\fB:\fIx\fB:\fIx\fB:\fIx\fB:\fIx\fB:\fIx\fB:\fIx\fB:\fIx\fR, where
+\fIx\fR are the hexadecimal values of the eight 16-bit pieces of the
+address. A single instance of \fB::\fR may be used to indicate multiple
+groups of 16-bits of zeros. The optional \fInetmask\fR allows
+restricting a match to an IPv6 address prefix. A netmask is specified
+as a CIDR block (e.g. \fB2001:db8:3c4d:1::/64\fR).
+.
+.IP \fBnd_target=\fIipv6\fR
+When \fBdl_type\fR, \fBnw_proto\fR, and \fBicmp_type\fR specify
+IPv6 Neighbor Discovery (ICMPv6 type 135 or 136), matches the target address
+\fIipv6\fR. \fIipv6\fR is in the same format described earlier for the
+\fBipv6_src\fR and \fBipv6_dst\fR fields.
+.
+.IP \fBnd_sll=\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fR
+When \fBdl_type\fR, \fBnw_proto\fR, and \fBicmp_type\fR specify IPv6
+Neighbor Solicitation (ICMPv6 type 135), matches the source link\-layer
+address option. An address is specified as 6 pairs of hexadecimal
+digits delimited by colons.
+.
+.IP \fBnd_tll=\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fB:\fIxx\fR
+When \fBdl_type\fR, \fBnw_proto\fR, and \fBicmp_type\fR specify IPv6
+Neighbor Advertisement (ICMPv6 type 136), matches the target link\-layer
+address option. An address is specified as 6 pairs of hexadecimal
+digits delimited by colons.
+.