The configuration is as follows:
R1:
set interfaces ethernet eth0 address ‘192.168.163.197/24’
set interfaces ethernet eth0 hw-id ‘3c:6a:48:89:00:61’
set interfaces ethernet eth0 vrf ‘gre’
set interfaces tunnel tun0 encapsulation ‘gretap’
set interfaces tunnel tun0 remote ‘192.168.163.198’
set interfaces tunnel tun0 source-address ‘192.168.163.197’
set interfaces bridge br0 address ‘1.1.1.1/24’
set interfaces bridge br0 member interface tun0
set interfaces bridge br0 vrf ‘gre’
R2:
set interfaces ethernet eth0 address ‘192.168.163.198/24’
set interfaces ethernet eth0 hw-id ‘3c:6a:48:88:ff:6c’
set interfaces ethernet eth0 vrf ‘gre’
set interfaces tunnel tun0 encapsulation ‘gretap’
set interfaces tunnel tun0 remote ‘192.168.163.197’
set interfaces tunnel tun0 source-address ‘192.168.163.198’
set interfaces bridge br0 address ‘1.1.1.2/24’
set interfaces bridge br0 member interface tun0
set interfaces bridge br0 vrf ‘gre’