I need to rotate Vultr Reserved IPs on a VPN server without reboot, because a restart disconnects active users.

Vultr recommends using BGP + a dummy interface. The dummy interface works:

```

ip link add dev ha-ip type dummy

ip link set ha-ip up

ip addr add dev ha-ip <IP>/32

```

But I cannot install BIRD/BGP on Ubuntu 23.04 or 25.x because these releases no longer have valid repositories, and bird2 is only available on LTS versions. Reinstalling/downgrading the OS is not an option.

Goal: hot-attach Reserved IPs during rotation without reboot.

Question:

Is there a supported way to announce/activate a Reserved IP without BGP on these Ubuntu versions?

If BGP is required, is there an alternative daemon that works on 23.x/25.x?

Any guidance is appreciated.