+ basic RERR type
writer accepts more than 1 unreachable node; reader starts handling RERRs
send to proper multicast address...
backup
backup
Merge branch 'master' into handling
Merge branch 'master' into handling
decrement hoplimit
check if route is broken; also almost done with case 1
backup
Merge branch 'master' into handling

Conflicts:
	aodvv2/constants.h
Merge branch 'master' into handling

Conflicts:
	aodvv2/constants.h
	aodvv2/routing.c
RERRs are not mistaken for RREQs in _write_packet() anymore
small fixes
Merge branch 'handling'