Add vrrp topology.

vrrp/frr/daemons

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+zebra=yes
+bgpd=no
+ospfd=no
+vrrpd=yes
+ospf6d=no
+ripd=no
+ripngd=no
+isisd=no
+pimd=no
+ldpd=no
+nhrpd=no
+eigrpd=no
+babeld=no
+sharpd=no
+staticd=no
+pbrd=no
+bfdd=no
+fabricd=no
+
+vtysh_enable=yes
+zebra_options=" -s 90000000 --daemon -A 127.0.0.1"
+bgpd_options="   --daemon -A 127.0.0.1"
+ospfd_options="  --daemon -A 127.0.0.1"
+ospf6d_options=" --daemon -A ::1"
+ripd_options="   --daemon -A 127.0.0.1"
+ripngd_options=" --daemon -A ::1"
+isisd_options="  --daemon -A 127.0.0.1"
+pimd_options="  --daemon -A 127.0.0.1"
+ldpd_options="  --daemon -A 127.0.0.1"
+nhrpd_options="  --daemon -A 127.0.0.1"
+eigrpd_options="  --daemon -A 127.0.0.1"
+babeld_options="  --daemon -A 127.0.0.1"
+sharpd_options="  --daemon -A 127.0.0.1"
+staticd_options="  --daemon -A 127.0.0.1"
+pbrd_options="  --daemon -A 127.0.0.1"
+bfdd_options="  --daemon -A 127.0.0.1"
+fabricd_options="  --daemon -A 127.0.0.1"

vrrp/frr/frr-setup.sh

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+#!/bin/sh 
+
+# waiting for the daemons to start
+sleep 2
+
+
+# Wait for the daemons to start
+sleep 5
+
+if command -v /usr/lib/frr/zebra; then
+  ip link add vrrp4-51 link eth-sw1 type macvlan mode bridge
+  ip link set dev vrrp4-51 address 00:00:5e:00:01:33
+  ip addr add 10.0.1.5/24 dev vrrp4-51
+  ip link set dev vrrp4-51 up
+fi

vrrp/frr/rt-1.conf

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+hostname rt-1
+!
+interface eth-sw1 
+ vrrp 51 version 2
+ vrrp 51 priority 10 
+ vrrp 51 advertisement-interval 1000 
+ vrrp 51 ip 10.0.1.5
+ !
+!
+line vty
+!

vrrp/frr/rt-2.conf

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+hostname rt-2
+!
+interface eth-sw1 
+ vrrp 51 version 2
+ vrrp 51 priority 20 
+ vrrp 51 advertisement-interval 1000 
+ vrrp 51 ip 10.0.1.5
+ !
+!
+line vty
+!

vrrp/holo/rt-1.conf

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+!
+interfaces interface eth-sw1
+ type iana-if-type:ethernetCsmacd
+ ipv4
+ !
+ ipv4 vrrp vrrp-instance 51
+  priority 10
+  !
+  virtual-ipv4-addresses virtual-ipv4-address 10.0.1.5
+!

vrrp/holo/rt-2.conf

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+!
+interfaces interface eth-sw1
+ type iana-if-type:ethernetCsmacd
+ ipv4
+ !
+ ipv4 vrrp vrrp-instance 51
+  priority 20 
+  !
+  virtual-ipv4-addresses virtual-ipv4-address 10.0.1.5
+!

vrrp/interfaces/rt-1

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+auto lo
+auto eth-sw1 
+
+iface lo inet static
+    address 1.1.1.1
+    netmask 255.255.255.255
+
+iface eth-sw1 inet static
+    address 10.0.1.1
+    netmask 255.255.255.0
+    mtu 1500

vrrp/interfaces/rt-2

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+auto lo
+auto eth-sw1 
+
+iface lo inet static
+    address 2.2.2.2
+    netmask 255.255.255.255
+
+iface eth-sw1 inet static
+    address 10.0.1.2
+    netmask 255.255.255.0
+    mtu 1500

vrrp/topology.yml

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+#                                   +-------+
+#                                   |       |
+#                                   |   h1  |
+#                                   |       |
+#                                   +-------+
+#                                       | sw-host
+#                                       | 10.0.1.3/24
+#                                       |
+#                                       |
+#                                       |
+#                                       |
+#                                  +---------+
+#                                  |         |
+#             +--------------------|   sw    |-------------------+
+#             |                    |         |                   |
+#             |                    +---------+                   |
+#             |                                                  |
+#             |                                                  |
+#             |                                                  |
+#             |                                                  |
+#             |  eth-sw1                                         |  eth-sw1
+#             |  10.0.1.1/24                                     |  10.0.1.2/24
+#     +-------------+              +----------+             +------------+
+#     |             |              |          |             |            |
+#     |    RT-1     |              |  Virtual |             |     RT-2   |
+#     |   1.1.1.1   |==============|  Router  |=============|   2.2.2.2  |
+#     |             |              |  10.0.1.5|             |            |
+#     +-------------+              +----------+             +------------+
+#
+# KEY:
+# -----   physical link
+# =====   virtual link
+
+name: vrrp 
+
+topology:
+  defaults:
+    binds:
+      - ../scripts/start.sh:/start.sh 
+      - frr/frr-setup.sh:/frr-setup.sh      
+      - frr/daemons:/etc/frr/daemons
+    exec:
+      - "/start.sh"
+      - "/frr-setup.sh"
+
+  nodes:
+
+    sw1:
+      kind: bridge
+
+    rt-1:
+      kind: linux 
+
+      # ---- holod image ---- 
+      image: local-holo:latest
+
+      # ---- frr image ---- 
+      # image: quay.io/frrouting/frr:9.0.2
+
+      binds:
+        - interfaces/rt-1:/etc/network/interfaces 
+        - holo/rt-1.conf:/etc/holo.startup
+        - frr/rt-1.conf:/etc/frr/frr.startup
+
+    rt-2:
+      kind: linux 
+
+      # ---- holod image ---- 
+      image: local-holo:latest
+
+      # ---- frr image ---- 
+      # image: quay.io/frrouting/frr:9.0.2
+
+      binds:
+        - interfaces/rt-2:/etc/network/interfaces 
+        - holo/rt-2.conf:/etc/holo.startup
+        - frr/rt-2.conf:/etc/frr/frr.startup
+
+  links:
+    # 10.0.1.0/24
+    - endpoints: ["host:sw-host", "sw1:eth-h1"]
+    - endpoints: ["rt-1:eth-sw1", "sw1:eth-rt1"]
+    - endpoints: ["rt-2:eth-sw1", "sw1:eth-rt2"]
+