{HEAD ~ The retransmitted packets} in {TAIL ~ the bypass session} are forwarded to circumvent at least some of the congested, multicast enabled routers in the long haul portion 
in
{ HEAD ~ The retransmitted packets } in { TAIL ~ the bypass session } are forwarded to circumvent at least some of the congested , multicast enabled routers in the long haul portion
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH