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OPTIONS
--help Show this help text.
--limit Maximum queue length in bytes.
--buffer create a new buffer(plug) and queue incoming traffic into it.
--release-one release traffic from previous buffer.
--release-indefinite stop buffering and release all (buffered and new) packets.
EXAMPLE # Attach plug qdisc with 32KB queue size to ifb0
nl-qdisc-add --dev=ifb0 --parent=root plug --limit=32768
# Plug network traffic arriving at ifb0
nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer
# Unplug traffic arriving at ifb0 indefinitely
nl-qdisc-add --dev=ifb0 --parent=root --update plug --release-indefinite
# If operating in output buffering mode:
# at time t=t0, create a new output buffer b0 to hold network output
nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer
# at time t=t1, take a checkpoint c0, create a new output buffer b1
nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer
# at time t=t1+r, after c0 is committed, release b0
nl-qdisc-add --dev=ifb0 --parent=root --update plug --release-one
# at time t=t2, take a checkpoint c1, create a new output buffer b2
nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer
# at time t=t2+r, after c1 is committed, release b1
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