lelastic is a elastic IP client designed to make the use of elastic IPs as easy as possible it does not need any configuration dependencies or advanced bgp skills

• this tool is completely optional and any bgp client/daemon of your choice will do the job.
• the sole purpose of this tool is to get you up and running as fast and easy as possible
• it does not support any fancy or advanced bgp trickery

• lelastic is basically a wrapper for gobgp (https://github.com/osrg/gobgp)
• lelastic when started up exposes the gobgp API, just like gobgp does on port 50051
  • since version 0.0.6 this is bound to localhost only. prior to this it was actually exposed

a few assumptions are made by this tool:

• your elastic IP needs to be configured on "lo" interface
• for ipv4 you need to configure the IP as a /32 tied to the loopback interface
• for ipv6 you can use any IP out of your /64 or /56 and of any subnet size as a loopback IP. if you want to announce your subnet as a /56 you need to toggle the flag -send56 otherwise it will default to announcing a /64

version=v0.0.6
curl -LO https://github.com/linode/lelastic/releases/download/$version/lelastic.gz
gunzip lelastic.gz
chmod 755 lelastic
mv lelastic /usr/local/bin/

Usage of ./lelastic:
  -dcid int
        dcid for your DC
  -logjson
        set log format to json
  -loglevel string
        set log level: trace, debug, info or warn (default "info")
  -primary
        advertise as primary
  -secondary
        advertise as secondary
  -send56
        Advertise ipv6 as /56 subnet (defaults to /64)

• to annnounce the linode as primary simply run

./lelastic -dcid 10 -primary

• to annnounce the linode as secondary simply run

./lelastic -dcid 10 -secondary

• to annnounce the IPv6 on your loopback as a /56 subnet

./lelastic -dcid 10 -primary -send56