-.IP "\fBiface\-set\-external\-id \fIiface key\fR [\fIvalue\fR]"
-Sets or clears an ``external ID'' value on \fIiface\fR. These value
-are intended to identify entities external to Open vSwitch with which
-\fIiface\fR is associated, e.g. the interface's identifier in a
-virtualization management platform. The Open vSwitch database schema
-specifies well-known \fIkey\fR values, but \fIkey\fR and \fIvalue\fR
-are otherwise arbitrary strings.
-.IP
-If \fIvalue\fR is specified, then \fIkey\fR is set to \fIvalue\fR for
-\fIiface\fR, overwriting any previous value. If \fIvalue\fR is
-omitted, then \fIkey\fR is removed from \fIiface\fR's set of external
-IDs (if it was present).
-.
-.IP "\fBbr\-get\-external\-id \fIiface\fR [\fIkey\fR]"
-Queries the external IDs on \fIiface\fR. If \fIkey\fR is specified,
-the output is the value for that \fIkey\fR or the empty string if
-\fIkey\fR is unset. If \fIkey\fR is omitted, the output is
-\fIkey\fB=\fIvalue\fR, one per line, for each key-value pair.
-.