Open Infrastructure

• Set IP "185.203.114.50" to hold in opennebula -> can use it for testing

router1:~# ip addr add 185.203.114.50/24 dev bond0.12
[16:39:59] router2.place6:~# ip addr add 185.203.114.50/24 dev bond0.12

pinging from 185.203.114.245

root@devuan:~# ping -c3 185.203.114.50   
PING 185.203.114.50 (185.203.114.50) 56(84) bytes of data.
64 bytes from 185.203.114.50: icmp_seq=1 ttl=64 time=0.994 ms
64 bytes from 185.203.114.50: icmp_seq=2 ttl=64 time=0.377 ms
64 bytes from 185.203.114.50: icmp_seq=3 ttl=64 time=0.317 ms

--- 185.203.114.50 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 10ms
rtt min/avg/max/mdev = 0.317/0.562/0.994/0.307 ms
root@devuan:~# ip neigh show | grep 185.203.114.50 
185.203.114.50 dev eth1 lladdr 00:1b:21:bc:7c:7a REACHABLE
root@devuan:~# 

Removing the IP address from the router that is in the cache and then checking how long it takes until failover

64 bytes from 185.203.114.50: icmp_seq=9 ttl=64 time=0.526 ms
64 bytes from 185.203.114.50: icmp_seq=10 ttl=64 time=0.824 ms
64 bytes from 185.203.114.50: icmp_seq=11 ttl=64 time=0.421 ms
64 bytes from 185.203.114.50: icmp_seq=12 ttl=64 time=0.316 ms
64 bytes from 185.203.114.50: icmp_seq=13 ttl=64 time=0.619 ms
From 185.203.114.10: icmp_seq=14 Redirect Host(New nexthop: 185.203.114.50)
64 bytes from 185.203.114.50: icmp_seq=14 ttl=64 time=1.07 ms
From 185.203.114.10: icmp_seq=15 Redirect Host(New nexthop: 185.203.114.50)

Practically seen no packet loss on failover in IPv4 -> assignment on both works.