# SRv6のパケット観察記録


こんな感じで設定

preinit:
- cmds:
  - cmd: modprobe vrf

nodes:
- name: R1
  image: nicolaka/netshoot
  docker_run_extra_args: --entrypoint bash
  volume: /tmp/tinet
  sysctls:
  - sysctl: net.vrf.strict_mode=1
  - sysctl: net.ipv4.ip_forward=1
  - sysctl: net.ipv4.conf.all.rp_filter=0
  - sysctl: net.ipv4.conf.default.rp_filter=0
  - sysctl: net.ipv6.conf.all.forwarding=1
  - sysctl: net.ipv6.conf.all.disable_ipv6=0
  - sysctl: net.ipv6.conf.all.seg6_enabled=1
  - sysctl: net.ipv6.conf.default.forwarding=1
  - sysctl: net.ipv6.conf.default.disable_ipv6=0
  - sysctl: net.ipv6.conf.default.seg6_enabled=1
  interfaces:
  - { name: net10, type: direct, args: R2#net10 }
  - { name: net2, type: direct, args: HostA1#net0 }
- name: R2
  image: nicolaka/netshoot
  docker_run_extra_args: --entrypoint bash
  volume: /tmp/tinet
  sysctls:
  - sysctl: net.vrf.strict_mode=1
  - sysctl: net.ipv4.ip_forward=1
  - sysctl: net.ipv4.conf.all.rp_filter=0
  - sysctl: net.ipv4.conf.default.rp_filter=0
  - sysctl: net.ipv6.conf.all.forwarding=1
  - sysctl: net.ipv6.conf.all.disable_ipv6=0
  - sysctl: net.ipv6.conf.all.seg6_enabled=1
  - sysctl: net.ipv6.conf.default.forwarding=1
  - sysctl: net.ipv6.conf.default.disable_ipv6=0
  - sysctl: net.ipv6.conf.default.seg6_enabled=1
  interfaces:
  - { name: net10, type: direct, args: R1#net10 }
  - { name: net2, type: direct, args: HostA2#net0 }

- name: HostA1
  image: nicolaka/netshoot
  docker_run_extra_args: --entrypoint bash
  interfaces:
  - { name: net0, type: direct, args: R1#net2 }
- name: HostA2
  image: nicolaka/netshoot
  docker_run_extra_args: --entrypoint bash
  interfaces:
  - { name: net0, type: direct, args: R2#net2 }

node_configs:
- name: R1
  cmds:
  - cmd: ip addr add 2001:13::1/64 dev net10
  - cmd: ip addr add 192.168.0.1/24 dev net2

  - cmd: ip link add CUST-A type vrf table 10
  - cmd: ip link set CUST-A up
  - cmd: ip link set net2 vrf CUST-A

  - cmd: ip route add fc00:2::/64 via 2001:13::2 dev net10
  - cmd: ip route add fc00:1::10/128 encap seg6local action End.DT4 vrftable 10 dev CUST-A
  - cmd: ip route add 192.168.1.0/24 vrf CUST-A nexthop encap seg6 mode encap segs fc00:2::10 dev net10

- name: R2
  cmds:
  - cmd: ip addr add 2001:13::2/64 dev net10
  - cmd: ip addr add 192.168.1.1/24 dev net2

  - cmd: ip link add CUST-A type vrf table 10
  - cmd: ip link set CUST-A up
  - cmd: ip link set net2 vrf CUST-A

  - cmd: ip route add fc00:1::10 via 2001:13::1 dev net10
  - cmd: ip route add fc00:2::10/128 encap seg6local action End.DT4 vrftable 10 dev CUST-A
  - cmd: ip route add 192.168.0.0/24 vrf CUST-A nexthop encap seg6 mode encap segs fc00:1::10 dev net10

- name: HostA1
  cmds:
  - cmd: ip addr add 192.168.0.2/24 dev net0
  - cmd: ip route add default via 192.168.0.1
- name: HostA2
  cmds:
  - cmd: ip addr add 192.168.1.2/24 dev net0
  - cmd: ip route add default via 192.168.1.1

R1側


R2側

dst addrがR2のlocatorになってる