GRE ethernet l2 mode

Configuration ethernet over internet on gre interfaces

Load in module

modprobe ip_gre
modprobe gre

S1 - server 1

S2 - server 2

S1: ip link add gre0 type gretap  local 192.168.0.254 remote 192.168.0.11

S1: ip link set gre0 up

S1: iptables -I INPUT -p gre -s 192.168.0.11 -j ACCEPT

S2: ip link add gre0 type gretap local 192.168.0.11 remote 192.168.0.254

S2: ip link set gre0 up

S2: iptables -I INPUT -p gre -s 192.168.0.254 -j ACCEPT

S1: ip addr add 10.0.0.1/24 dev gre0

S2: ip addr add 10.0.0.2/24 dev gre0