More information for error in in IPSec setup and Fix error in start by check defaultroute
ipsec: must specify L2TP port selectors for handshake to work
ipsec: it's not an error if we already know %defaultroute
ipsec: don't forget to clean up tunnel when finished
ipsec: clean up startup commands, error handling, pointless strlens
Merge pull request #29 from ndorf/master

ipsec fixes & other cleanups