This is a collection of advanced configuration examples.
conn ramsayville--marajade
leftsubnet=202.112.44.192/26
also=road-marajade
also=homegate.tygerteam.com
auto=start
conn ramsayville-annex--marajade
leftsubnet=192.168.88.0/24
also=road-marajade
also=homegate.tygerteam.com
auto=start
conn road-marajade
right=%defaultroute
rightid=@marajade.sandelman.ca
rightsubnet=205.150.200.163/32
rightsourceip=205.150.200.163
#key is in DNS, so no need for it here.
conn homegate.tygerteam.com
left=69.196.473.536
dpdaction=hold
dpddelay=30
dpdtimeout=180
leftid=@homegate.tygerteam.com
leftrsasigkey=0sAQP...Lh
This sets up two conns: one from an extruded IP of 205.150.200.163/32 to 192.168.88.0/24, and the other from 205.150.200.163/32 to 202.112.44.192/26.
It also says to use the .163 address whenever talking to those subnets using right[sourceip]