FreeBSD : connexion fibre mode PPPoE + VLAN

# cat /etc/rc.conf

gateway_enable="YES"
network_interfaces="lo0 igb0"
cloned_interfaces="vlan35"
ifconfig_igb0="up polling"
ifconfig_vlan35="vlan 35 vlandev igb0"

ppp_enable="YES"
ppp_mode="ddial"
ppp_nat="NO"
ppp_profile="myisp"

# cat /etc/ppp/ppp.conf

myisp:
    set device PPPoE:vlan35
    set authname toto@tata
    set authkey blablablaaa
    set dial
    set login
    set log phase tun command
    add default HISADDR