fix build with gcc 4.3.0

nsc: delay creating nsc interface using ScheduleNow (). because we cannot rely on the node to have any assigned interface when the nsc stack is initialised, we need to delay creating the nsc interface. Up until now this was done by initialising the interface when the first socket is opened, which resulted in a segfault or an assertion failure when a packet arrived but no socket was ever created...

make sure sinks are started

make sure that the sinks are started

use better variable names.

the sink must be enabled on node 2

mispeeling in introduction.texi

nsc: avoid unecessary use of posix headers this removes usage of struct iphdr and inet_ntoa. Replaced by uint32_t[] (we only need to fetch source/destination ip addresses) and Ipv4Header::Print(), respectively. netinet/in.h and arpa/inet.h are retained for the time being due to ntohs/ntohl.

nsc: make sure nsc has a configured interface the receive method hands packets to the nsc core via nsc's if_receive_packet() method. NSC (rightfully) assumes that if it gets a packet, there must be a network interface. However, at this time the interface initialization in ns-3-nsc is done when the first socket is created. The result is a segmentation fault inside nsc when ns-3 receives a packet on an nsc-enabled node before a socked has been created on that node. For the time being, use NS_ASSERT to make sure the nsc interface exits. This also gets rid of the NS_LOG use inside the Softinterrupt timer method and replaces NS_LOG_FUNCTION_NOARGS with NS_LOG_FUNCTION (this), as suggested by Mathieu Lacage.

Added tag ns-3.2 for changeset 2ecac911b3ec