Difference between revisions of "IPv6: Router Ubuntu"

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[[File:IPv6-router-ubuntu.jpeg|center|300px|thumb]]
+
[[File:IPv6-router-ubuntu.jpeg|center|400px|thumb]]
  
 
Berikut adalah langkah yang perlu dilakukan untuk membuat sebuah router IPv6 sederhana menggunakan Ubuntu.
 
Berikut adalah langkah yang perlu dilakukan untuk membuat sebuah router IPv6 sederhana menggunakan Ubuntu.
Line 13: Line 13:
  
 
* [[IPv6 Address : Perhitungan subnetting IPv6]]
 
* [[IPv6 Address : Perhitungan subnetting IPv6]]
 +
 +
 +
==NAT IPv6==
 +
 +
Jika dibutuhkan, maka netfilter6 dapat digunakan sebagai NAT IPv6.
 +
 +
====IPv6 Masquerading====
 +
 +
Seperti layaknya client IPv4, maka client dapat di sembunyikan di belakang router dengan IPv6 masquerading (hide/overlap NAT), seperti
 +
 +
ip6tables -t nat -A POSTROUTING -o tun0 -s fec0::/64 -j MASQUERADE
 +
ip6tables -t nat -A POSTROUTING -o teredo -s 2001:0:53aa:64c:20a7:659c:4b0c:e8d7 -j MASQUERADE
 +
 +
====IPv6 Destination NAT====
 +
 +
Sebuah dedicated IPv6 address global dapat di forward ke internal IPv6 address, seperti,
 +
 +
ip6tables -t nat -A PREROUTING -d 2001:db8:0:1:5054:ff:fe01:2345 -i tun0 -j DNAT --to-destination fec0::5054:ff:fe01:2345
 +
 +
====IPv6 Port Forwarding====
 +
 +
Sebuah port yang spesifik dapat di forward ke jaringan internal, seperti,
 +
 +
ip6tables -t nat -A PREROUTING -i tun0 -p tcp --dport 8080 -j DNAT --to-destination [fec0::1234]:80
  
 
==Siapkan OS Ubuntu==
 
==Siapkan OS Ubuntu==
  
−
===Skenario 1: Alokasi Stateless untuk LAN lokal===
+
===Skenario 1: teredo dan Alokasi Stateless untuk LAN lokal===
 +
 
 +
'''Topology'''
 +
 
 +
Client --- e1-SERVER-e0 --- Internet
 +
 
 +
 
 +
'''GATEWAY / Router ke Internet'''
  
−
'''GATEWAY'''
+
Install teredo
 +
 
 +
sudo su
 +
apt install miredo
 +
/etc/init.d/miredo restart
  
 
Install radvd
 
Install radvd
  
−
sudo aptitude install radvd
 
 
  echo 1 > /proc/sys/net/ipv6/conf/all/forwarding  
 
  echo 1 > /proc/sys/net/ipv6/conf/all/forwarding  
 +
echo 1 > /proc/sys/net/ipv6/conf/default/forwarding
 +
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/forwarding
 +
echo 1 > /proc/sys/net/ipv6/conf/enp0s8/forwarding
 +
echo 1 > /proc/sys/net/ipv6/conf/teredo/forwarding
 +
 +
ip addr add fec0:1234::dead/64 dev enp0s8
 +
ifconfig enp0s8 up
 +
sudo apt install radvd
  
−
  interface enp3s0 {
+
Edit /etc/radvd.conf
 +
 
 +
  interface enp0s8 {
 
         AdvSendAdvert on;
 
         AdvSendAdvert on;
−
         prefix 2a07:1c44:0212:c0ca:87e8::/80 {
+
         prefix fec0:1234::/64 {
 
         };
 
         };
 
  };
 
  };
Line 34: Line 78:
  
 
  /etc/init.d/radvd restart
 
  /etc/init.d/radvd restart
 +
 +
NAT ke IPv6 Global
 +
 +
ip6tables -t nat -A POSTROUTING -o teredo -s fec0:1234::/64 -j MASQUERADE
  
  
−
* Aktifkan IPv6 Address Forwarding
+
'''CLIENT'''
−
* Aktifkan Router Advertisement
+
 
 +
* interface menggunakan IPv6 automatic; IPv4 bisa di matikan.
 +
* edit /etc/resolv.conf
 +
 
 +
# nameserver Google IPv6
 +
nameserver 2001:4860:4860::8888
 +
nameserver 2001:4860:4860::8844
 +
 
 +
===Skenario 2: 6project dan IPv6 Static LAN lokal===
 +
 
 +
'''Topology'''
 +
 
 +
Client --- e1-SERVER-e0 --- Internet
 +
 
 +
Alokasi IPv6 dari 6project.org hanya /80, hanya bisa untuk static LAN saja. Tidak bisa untuk yang lain.
 +
 
 +
 
 +
'''GATEWAY / Router ke Internet'''
 +
 
 +
sudo su
 +
apt update
 +
apt install openvpn
 +
openvpn --config usernameanda-di-6project.ovpn &
 +
 
 +
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
 +
echo 1 > /proc/sys/net/ipv6/conf/default/forwarding
 +
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/forwarding
 +
echo 1 > /proc/sys/net/ipv6/conf/enp0s8/forwarding
 +
echo 1 > /proc/sys/net/ipv6/conf/tun0/forwarding
 +
 
 +
ip addr del 2a07:1c44:212:c0ca:87e8::/80 dev tun0
 +
ip addr add 2a07:1c44:212:c0ca:87e8:8000::1/81 dev tun0
 +
ip addr add 2a07:1c44:212:c0ca:87e8:0000::dead/81 dev enp0s8
 +
ifconfig enp0s8 up
 +
ip route add ::/0 dev tun0
 +
 
 +
 
 +
Flush firewall
 +
 
 +
ip6tables -t nat -F
 +
ip6tables -F
 +
 
 +
'''CLIENT'''
 +
 
 +
Supaya mudah sebaiknya setup client dilakukan menggunakan fasilitas konfigurasi jaringan yang GUI. Untuk client yang CLI dapat menggunakan perintah di bawah ini,
 +
 
 +
ip addr add 2a07:1c44:212:c0ca:87e8:0000::123/81 dev eth0
 +
ip route add ::/0 via 2a07:1c44:212:c0ca:87e8:0000::dead
 +
 
 +
atau
 +
 
 +
ip route add ::/0 dev enp0s3
 +
 
 +
 
 +
Edit /etc/resolv.conf
 +
 
 +
# nameserver Google IPv6
 +
nameserver 2001:4860:4860::8888
 +
nameserver 2001:4860:4860::8844
 +
 
 +
 
 +
Cek
 +
 
 +
dig aaaa ipv6.google.com
 +
ping6 ipv6.google.com
 +
 
 +
===Skenario 3: 6project alokasikan DHCPv6 LAN + ndp===
 +
 
 +
Disini alokasi IPv6 dari 6project di alokasikan menggunakan DHCPv6.
 +
Tapi routing, proxy ndp semua harus di set manual supaya jalan. Sebetulnya mirip dengan static routing saja, tapi alokasi IPv6 via DHCPv6.
  
−
===Skenario 2: Routing Statik untuk LAN Lokal===
 
  
 
'''GATEWAY'''
 
'''GATEWAY'''
  
−
Kondisi Gateway
+
Aktifkan neighbor discovery proxy (ndp)
  
 +
echo 1 > /proc/sys/net/ipv6/conf/all/proxy_ndp
 +
echo 1 > /proc/sys/net/ipv6/conf/tun0/proxy_ndp
 
  echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
 
  echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
 +
echo 1 > /proc/sys/net/ipv6/conf/default/forwarding
 +
echo 1 > /proc/sys/net/ipv6/conf/tun0/forwarding
 +
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/forwarding
 +
 +
Lakukan proxy ke masing2 IPv6 client, misalnya
 +
 +
openvpn --config XXXX.ovpn
 +
ip addr del 2a07:1c44:212:c0ca:87e8::/80 dev tun0
 +
ip addr add 2a07:1c44:212:c0ca:87e8:8000::1/81 dev tun0
 +
ip addr add 2a07:1c44:212:c0ca:87e8::1/81 dev enp0s3
 +
ip route add ::/0 dev tun0
 +
ip route add 2a07:1c44:212:c0ca:87e8::/81 enp0s3
 +
 +
ip -6 neigh add proxy 2a07:1c44:212:c0ca:87e8::22 dev tun0
 +
 +
'''CLIENT'''
  
−
* Interface tun0 IPv4 10.8.0.21/24 dan IPv6 2a07:1c44:212:c0ca:87e8::/80
+
ip addr add 2a07:1c44:212:c0ca:87e8::22/81 dev enp0s3
 +
ip route add ::/0 via 2a07:1c44:212:c0ca:87e8::1 dev enp0s3
  
−
  echo 1 > /proc/sys/net/ipv6/conf/tun0/forwarding
+
dig aaaa ipv6.google.com
 +
ping ipv6.google.com
 +
 
 +
===PROBLEM Skenario: 6project alokasikan DHCPv6 LAN===
 +
 
 +
'''CATATAN:'''
 +
* DHCPv6 tampaknya hanya bisa mengalokasikan /128 harus di bantu RA utk < /128.
 +
* Routing tidak di set
 +
* RA juga tidak berfungsi untuk alokasi < /64, tadi harus di routing di konfigurasi manual.
 +
 
 +
 
 +
openvpn --config usernameanda-di-6project.ovpn &
 +
 
 +
  echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
 +
ip addr del 2a07:1c44:212:c0ca:87e8::/80 dev tun0
 +
ip addr add 2a07:1c44:212:c0ca:87e8:8000::1/81 dev tun0
 
  ip route add ::/0 dev tun0
 
  ip route add ::/0 dev tun0
 +
ip addr add 2a07:1c44:212:c0ca:87e8::1/81 dev enp0s3
 +
 +
DHCPv6 server
 +
 +
apt install isc-dhcp-server
 +
 +
Edit /etc/dhcp/dhcpd6.conf
 +
 +
default-lease-time 600;
 +
max-lease-time 7200;
 +
subnet6 2a07:1c44:212:c0ca:87e8::/81 {
 +
        range6 2a07:1c44:212:c0ca:87e8::1000 2a07:1c44:212:c0ca:87e8::3000;
 +
        range6 2a07:1c44:212:c0ca:87e8::/81 temporary;
 +
        prefix6 2a07:1c44:212:c0ca:87e8::1000 2a07:1c44:212:c0ca:87e8::3000 /81;
 +
}
 +
 +
chmod -Rf 777 /var/lib/dhcp/
 +
chown -Rf nobody: /var/lib/dhcp/
 +
dhcpd -6 -cf /etc/dhcp/dhcpd6.conf
 +
 +
Aktifkan radvd
 +
 +
sudo apt install radvd
 +
 +
Edit /etc/radvd.conf
 +
 +
interface enp0s3 {
 +
        AdvSendAdvert on;
 +
        prefix 2a07:1c44:212:c0ca:87e8::/81 {
 +
        };
 +
};
 +
 +
 +
 +
 +
Flush firewall
  
−
* Interface enp3s0
+
ip6tables -t nat -F
 +
ip6tables -F
  
−
echo 1 > /proc/sys/net/ipv6/conf/enp3s0/forwarding
 
−
ip addr add 2a07:1c44:212:c0ca:87e8:1000::1/84 dev enp3s0
 
−
ip -6 route add 2a07:1c44:212:c0ca:87e8:2000::/84 via 2a07:1c44:212:c0ca:87e8:1000::100
 
  
 +
'''CLIENT'''
  
−
'''CLIENT di VirtualBox'''
+
===PROBELM Skenario: 6Project dan Alokasi Stateless untuk LAN lokal===
  
−
* Set IPv6 Static (enp0s3)
+
'''CATATAN:'''
 +
* 6project.org hanya mengalokasikan /80
 +
* /80 tidak bisa dipakai untuk Stateless menggunakan radvd
 +
* radvd aman untuk alokasi /64 atau lebh besar.
  
−
echo 0 > /proc/sys/net/ipv6/conf/all/forwarding
 
−
ip addr add 2a07:1c44:212:c0ca:87e8:1000::100/84 dev enp0s3
 
−
ip addr add 2a07:1c44:212:c0ca:87e8:2000::100/84 dev enp0s3
 
−
ip -6 route add 2a07:1c44:212:c0ca:87e8::/84 enp0s3
 
−
ip -6 route add 2a07:1c44:212:c0ca:87e8::/84 via 2a07:1c44:212:c0ca:87e8::2/84
 
−
ip -6 route add ::/0 via 2a07:1c44:212:c0ca:87e8::2/84
 
  
−
atau eth0
+
'''GATEWAY / Router ke Internet'''
  
−
  echo 0 > /proc/sys/net/ipv6/conf/all/forwarding
+
  echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
−
  ip addr add 2a07:1c44:212:c0ca:87e8:1000::100/84 dev eth0
+
echo 1 > /proc/sys/net/ipv6/conf/default/forwarding
−
  ip addr add 2a07:1c44:212:c0ca:87e8:2000::100/84 dev eth0
+
echo 1 > /proc/sys/net/ipv6/conf/tun0/forwarding
−
  ip -6 route add 2a07:1c44:212:c0ca:87e8::/84 eth0
+
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/forwarding
−
  ip -6 route add 2a07:1c44:212:c0ca:87e8::/84 via 2a07:1c44:212:c0ca:87e8::2/84
+
echo 1 > /proc/sys/net/ipv6/conf/enp0s8/forwarding
−
  ip -6 route add ::/0 via 2a07:1c44:212:c0ca:87e8::2/84
+
 
 +
openvpn --config usernameanda-di-6project.ovpn &
 +
 
 +
  ip addr del 2a07:1c44:212:c0ca:87e8::/80 dev tun0
 +
  ip addr add 2a07:1c44:212:c0ca:87e8:8000::1/81 dev tun0
 +
  ip addr add 2a07:1c44:212:c0ca:87e8:0000::dead/81 dev enp0s8
 +
  ip route add 2000::/3 via 2a07:1c44:212:c0ca::1 metric 1 dev tun0
 +
ip route add 2a07:1c44:212:c0ca:87e8:0000::/81 dev enp0s8
 +
 
 +
  sudo apt install radvd
 +
 
 +
Edit /etc/radvd.conf
 +
 
 +
interface enp0s8 {
 +
        AdvSendAdvert on;
 +
        AdvDefaultPreference high;
 +
        prefix 2a07:1c44:212:c0ca:87e8:0000::/81 {
 +
        };
 +
};
 +
 
 +
Restart
 +
 
 +
/etc/init.d/radvd restart
  
−
===Skenario 3: Alokasi subnet untuk salah satu PC / Router di LAN===
+
'''CLIENT'''
  
−
* Aktifkan IPv6 Address Forwarding
+
echo 1 > /proc/sys/net/ipv6/conf/all/accept_ra
−
* Set IPv6 Static
+
echo 1 > /proc/sys/net/ipv6/conf/default/accept_ra
 +
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/accept_ra
 +
echo 1 > /proc/sys/net/ipv6/conf/all/accept_ra_from_local
 +
echo 1 > /proc/sys/net/ipv6/conf/default/accept_ra_from_local
 +
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/accept_ra_from_local
 +
echo 1 > /proc/sys/net/ipv6/conf/all/accept_ra_defrtr
 +
echo 1 > /proc/sys/net/ipv6/conf/default/accept_ra_defrtr
 +
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/accept_ra_defrtr
  
 
==Pranala Menarik==
 
==Pranala Menarik==
  
 
* [[IPv6]]
 
* [[IPv6]]

Latest revision as of 06:11, 26 March 2019

IPv6-router-ubuntu.jpeg

Berikut adalah langkah yang perlu dilakukan untuk membuat sebuah router IPv6 sederhana menggunakan Ubuntu.


Akses ke IPv6 Internet

Perhitungan Subnet IPv6


NAT IPv6

Jika dibutuhkan, maka netfilter6 dapat digunakan sebagai NAT IPv6.

IPv6 Masquerading

Seperti layaknya client IPv4, maka client dapat di sembunyikan di belakang router dengan IPv6 masquerading (hide/overlap NAT), seperti 

ip6tables -t nat -A POSTROUTING -o tun0 -s fec0::/64 -j MASQUERADE
ip6tables -t nat -A POSTROUTING -o teredo -s 2001:0:53aa:64c:20a7:659c:4b0c:e8d7 -j MASQUERADE

IPv6 Destination NAT

Sebuah dedicated IPv6 address global dapat di forward ke internal IPv6 address, seperti, 

ip6tables -t nat -A PREROUTING -d 2001:db8:0:1:5054:ff:fe01:2345 -i tun0 -j DNAT --to-destination fec0::5054:ff:fe01:2345

IPv6 Port Forwarding

Sebuah port yang spesifik dapat di forward ke jaringan internal, seperti, 

ip6tables -t nat -A PREROUTING -i tun0 -p tcp --dport 8080 -j DNAT --to-destination [fec0::1234]:80

Siapkan OS Ubuntu

Skenario 1: teredo dan Alokasi Stateless untuk LAN lokal

Topology 

Client --- e1-SERVER-e0 --- Internet


GATEWAY / Router ke Internet

Install teredo 

sudo su
apt install miredo
/etc/init.d/miredo restart

Install radvd 

echo 1 > /proc/sys/net/ipv6/conf/all/forwarding 
echo 1 > /proc/sys/net/ipv6/conf/default/forwarding 
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/forwarding
echo 1 > /proc/sys/net/ipv6/conf/enp0s8/forwarding
echo 1 > /proc/sys/net/ipv6/conf/teredo/forwarding 

ip addr add fec0:1234::dead/64 dev enp0s8
ifconfig enp0s8 up
sudo apt install radvd

Edit /etc/radvd.conf 

interface enp0s8 {
        AdvSendAdvert on;
        prefix fec0:1234::/64 {
        };
};

Restart 

/etc/init.d/radvd restart

NAT ke IPv6 Global 

ip6tables -t nat -A POSTROUTING -o teredo -s fec0:1234::/64 -j MASQUERADE


CLIENT

  • interface menggunakan IPv6 automatic; IPv4 bisa di matikan.
  • edit /etc/resolv.conf
# nameserver Google IPv6
nameserver 2001:4860:4860::8888
nameserver 2001:4860:4860::8844

Skenario 2: 6project dan IPv6 Static LAN lokal

Topology 

Client --- e1-SERVER-e0 --- Internet

Alokasi IPv6 dari 6project.org hanya /80, hanya bisa untuk static LAN saja. Tidak bisa untuk yang lain.


GATEWAY / Router ke Internet 

sudo su
apt update
apt install openvpn
openvpn --config usernameanda-di-6project.ovpn &

echo 1 > /proc/sys/net/ipv6/conf/all/forwarding 
echo 1 > /proc/sys/net/ipv6/conf/default/forwarding 
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/forwarding
echo 1 > /proc/sys/net/ipv6/conf/enp0s8/forwarding
echo 1 > /proc/sys/net/ipv6/conf/tun0/forwarding 

ip addr del 2a07:1c44:212:c0ca:87e8::/80 dev tun0
ip addr add 2a07:1c44:212:c0ca:87e8:8000::1/81 dev tun0
ip addr add 2a07:1c44:212:c0ca:87e8:0000::dead/81 dev enp0s8
ifconfig enp0s8 up
ip route add ::/0 dev tun0


Flush firewall 

ip6tables -t nat -F
ip6tables -F

CLIENT

Supaya mudah sebaiknya setup client dilakukan menggunakan fasilitas konfigurasi jaringan yang GUI. Untuk client yang CLI dapat menggunakan perintah di bawah ini, 

ip addr add 2a07:1c44:212:c0ca:87e8:0000::123/81 dev eth0
ip route add ::/0 via 2a07:1c44:212:c0ca:87e8:0000::dead

atau 

ip route add ::/0 dev enp0s3


Edit /etc/resolv.conf 

# nameserver Google IPv6
nameserver 2001:4860:4860::8888
nameserver 2001:4860:4860::8844


Cek 

dig aaaa ipv6.google.com
ping6 ipv6.google.com

Skenario 3: 6project alokasikan DHCPv6 LAN + ndp

Disini alokasi IPv6 dari 6project di alokasikan menggunakan DHCPv6. Tapi routing, proxy ndp semua harus di set manual supaya jalan. Sebetulnya mirip dengan static routing saja, tapi alokasi IPv6 via DHCPv6.


GATEWAY

Aktifkan neighbor discovery proxy (ndp) 

echo 1 > /proc/sys/net/ipv6/conf/all/proxy_ndp
echo 1 > /proc/sys/net/ipv6/conf/tun0/proxy_ndp
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
echo 1 > /proc/sys/net/ipv6/conf/default/forwarding
echo 1 > /proc/sys/net/ipv6/conf/tun0/forwarding
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/forwarding

Lakukan proxy ke masing2 IPv6 client, misalnya 

openvpn --config XXXX.ovpn
ip addr del 2a07:1c44:212:c0ca:87e8::/80 dev tun0
ip addr add 2a07:1c44:212:c0ca:87e8:8000::1/81 dev tun0
ip addr add 2a07:1c44:212:c0ca:87e8::1/81 dev enp0s3
ip route add ::/0 dev tun0
ip route add 2a07:1c44:212:c0ca:87e8::/81 enp0s3

ip -6 neigh add proxy 2a07:1c44:212:c0ca:87e8::22 dev tun0

CLIENT 

ip addr add 2a07:1c44:212:c0ca:87e8::22/81 dev enp0s3
ip route add ::/0 via 2a07:1c44:212:c0ca:87e8::1 dev enp0s3

dig aaaa ipv6.google.com
ping ipv6.google.com

PROBLEM Skenario: 6project alokasikan DHCPv6 LAN

CATATAN:

  • DHCPv6 tampaknya hanya bisa mengalokasikan /128 harus di bantu RA utk < /128.
  • Routing tidak di set
  • RA juga tidak berfungsi untuk alokasi < /64, tadi harus di routing di konfigurasi manual.


openvpn --config usernameanda-di-6project.ovpn &

echo 1 > /proc/sys/net/ipv6/conf/all/forwarding 
ip addr del 2a07:1c44:212:c0ca:87e8::/80 dev tun0
ip addr add 2a07:1c44:212:c0ca:87e8:8000::1/81 dev tun0
ip route add ::/0 dev tun0
ip addr add 2a07:1c44:212:c0ca:87e8::1/81 dev enp0s3

DHCPv6 server 

apt install isc-dhcp-server

Edit /etc/dhcp/dhcpd6.conf 

default-lease-time 600;
max-lease-time 7200;
subnet6 2a07:1c44:212:c0ca:87e8::/81 {
        range6 2a07:1c44:212:c0ca:87e8::1000 2a07:1c44:212:c0ca:87e8::3000;
        range6 2a07:1c44:212:c0ca:87e8::/81 temporary;
        prefix6 2a07:1c44:212:c0ca:87e8::1000 2a07:1c44:212:c0ca:87e8::3000 /81;
}

chmod -Rf 777 /var/lib/dhcp/
chown -Rf nobody: /var/lib/dhcp/
dhcpd -6 -cf /etc/dhcp/dhcpd6.conf

Aktifkan radvd 

sudo apt install radvd

Edit /etc/radvd.conf 

interface enp0s3 {
        AdvSendAdvert on;
        prefix 2a07:1c44:212:c0ca:87e8::/81 {
        };
};



Flush firewall 

ip6tables -t nat -F
ip6tables -F


CLIENT

PROBELM Skenario: 6Project dan Alokasi Stateless untuk LAN lokal

CATATAN:

  • 6project.org hanya mengalokasikan /80
  • /80 tidak bisa dipakai untuk Stateless menggunakan radvd
  • radvd aman untuk alokasi /64 atau lebh besar.


GATEWAY / Router ke Internet 

echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
echo 1 > /proc/sys/net/ipv6/conf/default/forwarding
echo 1 > /proc/sys/net/ipv6/conf/tun0/forwarding
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/forwarding
echo 1 > /proc/sys/net/ipv6/conf/enp0s8/forwarding

openvpn --config usernameanda-di-6project.ovpn &

ip addr del 2a07:1c44:212:c0ca:87e8::/80 dev tun0
ip addr add 2a07:1c44:212:c0ca:87e8:8000::1/81 dev tun0
ip addr add 2a07:1c44:212:c0ca:87e8:0000::dead/81 dev enp0s8
ip route add 2000::/3 via 2a07:1c44:212:c0ca::1 metric 1 dev tun0
ip route add 2a07:1c44:212:c0ca:87e8:0000::/81 dev enp0s8

sudo apt install radvd

Edit /etc/radvd.conf 

interface enp0s8 {
        AdvSendAdvert on;
        AdvDefaultPreference high;
        prefix 2a07:1c44:212:c0ca:87e8:0000::/81 {
        };
};

Restart 

/etc/init.d/radvd restart

CLIENT 

echo 1 > /proc/sys/net/ipv6/conf/all/accept_ra
echo 1 > /proc/sys/net/ipv6/conf/default/accept_ra
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/accept_ra
echo 1 > /proc/sys/net/ipv6/conf/all/accept_ra_from_local 
echo 1 > /proc/sys/net/ipv6/conf/default/accept_ra_from_local 
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/accept_ra_from_local
echo 1 > /proc/sys/net/ipv6/conf/all/accept_ra_defrtr 
echo 1 > /proc/sys/net/ipv6/conf/default/accept_ra_defrtr 
echo 1 > /proc/sys/net/ipv6/conf/enp0s3/accept_ra_defrtr

Pranala Menarik

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