Testnet FreeFarm nodes have no IPv6 for zdb

[scottyeager]

I noticed that sometime around the 3.15 update, the nodes in FreeFarm on testnet don't have IPv6 addresses for their zdbs anymore.

This should be enough to see the issue:

tfcmd deploy zdb --mode seq --node 1 -n data --size 1
tfcmd get zdb data
tfcmd cancel data

Output:

{
	"Name": "data",
	"NodeID": 1,
	"SolutionType": "data",
	"SolutionProvider": null,
	"NetworkName": "",
	"Disks": [],
	"Zdbs": [
		{
			"name": "data0",
			"password": "",
			"public": false,
			"size": 1,
			"description": "",
			"mode": "seq",
			"ips": [
				"300:2589:76ee:f44e:a3ad:36d0:8f3c:f297",
				"44a:5fd6:b716:d147:f5ae:7088:a381:4976"
			],
			"port": 9900,
			"namespace": "504-57131-data0"
...

If we compare to mainnet, there's an IPv6 address provided:

{
	"Name": "data",
	"NodeID": 8,
	"SolutionType": "data",
	"SolutionProvider": null,
	"NetworkName": "",
	"Disks": [],
	"Zdbs": [
		{
			"name": "data0",
			"password": "",
			"public": false,
			"size": 10,
			"description": "",
			"mode": "seq",
			"ips": [
				"2a02:1802:5e:0:a89b:bfff:fec4:5205",
				"302:1297:52fe:57ba:e03d:e9da:161f:777",
				"535:d265:2030:57ec:830b:8147:6b44:bba6"
			],
			"port": 9900,
			"namespace": "5545-708012-data0"
...

Testnet always had this in the past too for IPv6 enabled nodes, and as far as I know both networks are running the same version of Zos now. So I don't understand why this is different.

It's also worth noting that these testnet nodes definitely have working IPv6 and are able to provide addresses to VMs that work fine.