offset into the image
@item -b, --bind=IFACE
interface to bind to (default `0.0.0.0')
+@item -k, --socket=PATH
+ Use a unix socket with path PATH
@item -r, --read-only
export read-only
@item -P, --partition=NUM
only expose partition NUM
+@item -c, --connect
+ connect FILE to NBD device DEV
+@item -d, --disconnect
+ disconnect the specified device
@item -v, --verbose
display extra debugging information
@item -h, --help