strongSwan

HELLO
We are using ipsec now and are planning to switch to swanctl。
I encountered many problems。
e.g
A:)
I pass ./configure by default make and install,however,when initiate a connection it say that

connecting to 'unix:///var/run/charon.vici' failed: No such file or directory
Error: connecting to 'default' URI failed: No such file or directory
strongSwan 5.8.1 swanctl
usage:
  swanctl --initiate [--child <name>] [--ike <name>] [--timeout <s>] [--raw|--pretty]
           --help            (-h)  show usage information
           --child           (-c)  initiate a CHILD_SA configuration
           --ike             (-i)  initiate an IKE_SA, or name of child's parent
           --timeout         (-t)  timeout in seconds before detaching
           --raw             (-r)  dump raw response message
           --pretty          (-P)  dump raw response message in pretty print
           --loglevel        (-l)  verbosity of redirected log
           --debug           (-v)  set debug level, default: 1
           --options         (-+)  read command line options from file
           --uri             (-u)  service URI to connect to

B:)
if peer is adsl (No fixed ip),the local(remote)_addrs = ？
C:)
Can local be ipsec and remote be swanctl?
D:)
Can i disenable ipsec using swanctl only?
E:)
I think the description of swanctl.conf is not detailed enough as preferred unlike ipsec.conf
https://wiki.strongswan.org/projects/strongswan/wiki/Swanctlconf

thanks.