l2tp over ipsec 添加用户登陆日志

添加日志：

[root@ali-prod-ops-vpn ~]# cat  /etc/ppp/ip-up
#!/bin/bash
# This file should not be modified -- make local changes to
# /etc/ppp/ip-up.local instead

PATH=/sbin:/usr/sbin:/bin:/usr/bin
export PATH

LOGDEVICE=$6
REALDEVICE=$1

[ -f /etc/sysconfig/network-scripts/ifcfg-${LOGDEVICE} ] && /etc/sysconfig/network-scripts/ifup-post --realdevice ${REALDEVICE} ifcfg-${LOGDEVICE}

/etc/ppp/ip-up.ipv6to4 ${LOGDEVICE}

[ -x /etc/ppp/ip-up.local ] && /etc/ppp/ip-up.local "$@"

echo "##################################" >> /var/log/pptpd.log
echo "Now User $PEERNAME is connected!!!" >> /var/log/pptpd.log
echo "##################################" >> /var/log/pptpd.log
echo "time: `date -d today +%F_%T`" >> /var/log/pptpd.log
echo "clientIP: $6" >> /var/log/pptpd.log
echo "username: $PEERNAME" >> /var/log/pptpd.log
echo "device: $1" >> /var/log/pptpd.log
echo "vpnIP: $4" >> /var/log/pptpd.log
echo "assignIP: $5" >> /var/log/pptpd.log
exit 0