Revert "net: fix buffer overrun in socket initialization"

This reverts commit e93d030058684f98894aafb5c4048b2c6d9d479f.
ccnl: always calculate chunk size by payload size
6lowpan: fix valgrind finding
udp: more debug for failing socket
ccnl: fix check for unset 802.15.4 address
ccnl: fix debugging for various retransmit counts
ccnl: WIP: various findings in appserver
WIP: demo settings
ccnl: fix sender address for 802.15.4 and retransmit unicasts
rpl: WIP: smaller routing table