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+---
+tags:
+  - work
+---
+# Previous IP migration API
+Stateful: sqlite db:
+- subnet state (mode: `migrating`)
+- ip state: active location (`CPH|AMS`)
+
+config:
+- LR map file
+- db config
+- tls
+- ip announcement file
+- hosts
+- key
+- user
+IP announcement file.
+
+Flow:
+- Prepare subnet (out-of-band)
+	- Creates a record for the subnet, and puts it in "migrating" mode.
+- Call migrate IP (ip, dest)
+	- Fails if subnet not prepared prior.
+	- Fails if destination not exists.
+	- Fails if invalid ip address
+
+
+# New IP migration API
+
+What is a "link scope"?
+
+API:
+- Prepare subnet : cidr
+- Migrate IP
+	- os set allowed address pair
+	- tun src: add /32 
+- Migrate gateway
+
+Kevin meet:
+tunnel-dst vm in openstack
+tunnel-src hardware ding
+puppet op tunnels
+
+stap 1 paars = api doet: op os router route voor elk ip in subnet aanmaken en proxy arp shit per subnet. AllowedAddrPair op port tunnel-dst. In eerste instantie gewoon alle IPs uit het subnet toevoegen.
+
+Beide IPv4 en IPv6 (6 kan iets later)
+
+Alle stappen moeten reversable zijn.
+
+stap 2 roze: test vm, routes op os verwijderen, op src net toevoegen
+stap 3 geel: switch network naar openstack, switch gateway ip
+
+
+**How ARP works**
+Host A thinks it has direct conn to Host B, thus sends ARP request to learn its MAC.
+\ No newline at end of file