sending {HEAD ~ an initial request} from {TAIL ~ the device} to the first ingress router prior to migrating to the second routing domain, the request to buffer the received packets in advance of migrating 
from
sending { HEAD ~ an initial request } from { TAIL ~ the device } to the first ingress router prior to migrating to the second routing domain , the request to buffer the received packets in advance of migrating
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH