ipip.yaml

# https://gyazo.com/43893dd9d7321e8dc0ddcdda878ea6cd

nodes:
- name: C1
  image: itsthenetwork/alpine-tcpdump:latest
  interfaces:
  - { name: net1, type: direct, args: C2#net1 }

- name: C2
  image: itsthenetwork/alpine-tcpdump:latest
  interfaces:
  - { name: net1, type: direct, args: C1#net1 }
  - { name: net2, type: direct, args: C3#net2 }
  sysctls:
  - sysctl: net.ipv4.ip_forward=1

- name: C3
  image: itsthenetwork/alpine-tcpdump:latest
  interfaces:
  - { name: net2, type: direct, args: C2#net2 }

node_configs:
- name: C1
  cmds:
  - cmd: ip addr add 10.1.0.1/24 dev net1
  - cmd: ip route add 10.2.0.2/32 via 10.1.0.2
  - cmd: ip tunnel add tun0 mode ipip local 10.1.0.1 remote 10.2.0.2 dev net1
  - cmd: ip addr add 1.1.1.1 dev tun0
  - cmd: ip link set tun0 up
  - cmd: ip route add 1.1.1.2/32 dev tun0

- name: C2
  cmds:
  - cmd: ip addr add 10.1.0.2/24 dev net1
  - cmd: ip addr add 10.2.0.1/24 dev net2

- name: C3
  cmds:
  - cmd: ip addr add 10.2.0.2/24 dev net2
  - cmd: ip route add 10.1.0.1/32 via 10.2.0.1
  - cmd: ip tunnel add tun0 mode ipip local 10.2.0.2 remote 10.1.0.1 dev net2
  - cmd: ip addr add 1.1.1.2 dev tun0
  - cmd: ip link set tun0 up
  - cmd: ip route add 1.1.1.1/32 dev tun0