VPN IPsec log level does not work
```
set vpn ipsec authentication psk PSK id '192.0.2.1'
set vpn ipsec authentication psk PSK id '192.0.2.2'
set vpn ipsec authentication psk PSK secret '1234567890'
set vpn ipsec esp-group ESP-group lifetime '3600'
set vpn ipsec esp-group ESP-group mode 'tunnel'
set vpn ipsec esp-group ESP-group pfs 'enable'
set vpn ipsec esp-group ESP-group proposal 1 encryption 'aes256'
set vpn ipsec esp-group ESP-group proposal 1 hash 'sha1'
set vpn ipsec ike-group IKE-group key-exchange 'ikev2'
set vpn ipsec ike-group IKE-group lifetime '28800'
set vpn ipsec ike-group IKE-group proposal 1 encryption 'aes256'
set vpn ipsec ike-group IKE-group proposal 1 hash 'sha1'
set vpn ipsec interface 'eth1'
set vpn ipsec log level '2'
set vpn ipsec site-to-site peer OFFICE-B authentication local-id '192.0.2.1'
set vpn ipsec site-to-site peer OFFICE-B authentication mode 'pre-shared-secret'
set vpn ipsec site-to-site peer OFFICE-B authentication remote-id '192.0.2.2'
set vpn ipsec site-to-site peer OFFICE-B connection-type 'initiate'
set vpn ipsec site-to-site peer OFFICE-B ike-group 'IKE-group'
set vpn ipsec site-to-site peer OFFICE-B local-address '192.0.2.1'
set vpn ipsec site-to-site peer OFFICE-B remote-address '192.0.2.2'
set vpn ipsec site-to-site peer OFFICE-B tunnel 0 esp-group 'ESP-group'
set vpn ipsec site-to-site peer OFFICE-B tunnel 0 local prefix '100.64.1.0/24'
set vpn ipsec site-to-site peer OFFICE-B tunnel 0 remote prefix '100.64.2.0/24'
```
---
For 1.4.x
Expected 2 for the `charon.syslog.daemon.default` option in the file `/etc/strongswan.d/charon-logging.conf `
But this option does not work.
```
vyos@r14# cat /etc/strongswan.d/charon-logging.conf
charon {
syslog {
# prefix for each log message
identifier = charon
# use default settings to log to the LOG_DAEMON facility
daemon {
default = 1
ike_name = yes
}
}
}
```
I do not see that we parse and use `log.level` option anywhere in the templates https://github.com/vyos/vyos-1x/tree/current/data/templates/ipsec
For the rolling expected for logging file
```
vyos@r14# cat /etc/strongswan.d/charon-systemd.conf
charon-systemd {
# Section to configure native systemd journal logger, very similar to the
# syslog logger as described in LOGGER CONFIGURATION in strongswan.conf(5).
journal {
# Loglevel for a specific subsystem.
# <subsystem> = <default>
# Default loglevel.
default = 2
}
}
```