howto add "pptp vpn to Internet" tunnal

General questions
1

please add “pptp vpn to Internet” tunnal
pptp vpn->eth1->eth0->Internet

2

How to change localip or add interface tunnel for pptp server?

vyos@vyos:/etc$ cat pptpd.conf
### Vyatta PPTP VPN Begin ###
option /etc/ppp/options.pptpd
listen 12.1.15.36
debug
#logwtmp
localip 10.255.254.0
remoteip 192.168.9.130-135
### Vyatta PPTP VPN End ###[/code]