Your ISP has provided you a /32 IP address for the actual public IP, which is an individual host address, and a different /30 subnet. You may configure the connection as follows:
<linux>
# Configure the network interface:
nano /etc/network/interfaces.d/eth0
{
iface eth0 inet static
address [Public IP]
netmask 255.255.255.255
gateway [Gateway IP]
up ip route add [Network IP] netmask 255.255.255.252 dev eth0
up ip route add default via [Gateway IP]
up ip route add [Public IP] dev eth0
up ip route del default
down ip route del [Public IP] dev eth0
down ip route del default via [Gateway IP]
down ip route del [Network IP] netmask 255.255.255.252 dev eth0
}</b>
<linux>
# Install required packages.
apt-get install ppp pppoeconf
# Configure the PPPoE connection.
pppoeconf
# Edit the PPP configuration file.
nano /etc/ppp/peers/dsl-provider
<b># Configure the connection.
hide-password
no-accomp
usepeerdns
nodetach
persist
maxfail 0
disconnect-timeout 10
connect /bin/true
noauth
# Add the username and password provided by your ISP.
user [Username]
password [Password]
</b>
<linux>
# Create the start script.
nano /etc/ppp/ip-up.d/myipup
<b># Add the following contents.
ip route add [Public IP] dev ppp0
</b>
<linux>
# Start the PPPoE connection.
pon dsl-provider
# Check the connection status.
plog