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