ipv6 configs

[AlexDeltax]

How to configurate ipv6 for Droplet with archlinux?
All configs due too wiki are missing and I even don't know how to make server been anable via ipv6

[chrissnell]

IPv6 broke for me on the last reboot:

Sep 21 20:54:21 jarvis systemd[1]: Starting Network Service...
Sep 21 20:54:21 jarvis systemd-networkd[353]: /run/systemd/network/dosync-eth0.network:8: Prefix len
gth is invalid, ignoring assignment: 
Sep 21 20:54:21 jarvis systemd-networkd[353]: eth0: Gained IPv6LL
Sep 21 20:54:21 jarvis systemd-networkd[353]: Enumeration completed
Sep 21 20:54:21 jarvis systemd[1]: Started Network Service.
Sep 21 20:54:21 jarvis systemd-networkd[353]: request_name_destroy_callback n_ref=1
Sep 21 20:54:21 jarvis systemd-networkd[353]: lo: Link is not managed by us
Sep 21 20:54:21 jarvis systemd-networkd[353]: eth0: Could not set route: No route to host
Sep 21 20:54:33 jarvis systemd-networkd[353]: eth0: Configured
Sep 21 21:02:03 jarvis systemd[1]: Stopping Network Service...
Sep 21 21:02:03 jarvis systemd[1]: Stopped Network Service.
Sep 21 21:02:03 jarvis systemd[1]: Starting Network Service...
Sep 21 21:02:03 jarvis systemd-networkd[567]: /run/systemd/network/dosync-eth0.network:8: Prefix len
gth is invalid, ignoring assignment: 
Sep 21 21:02:03 jarvis systemd-networkd[567]: eth0: Gained IPv6LL
Sep 21 21:02:03 jarvis systemd-networkd[567]: Enumeration completed
Sep 21 21:02:03 jarvis systemd[1]: Started Network Service.
Sep 21 21:02:03 jarvis systemd-networkd[567]: lo: Link is not managed by us
Sep 21 21:02:03 jarvis systemd-networkd[567]: request_name_destroy_callback n_ref=1
Sep 21 21:02:03 jarvis systemd-networkd[567]: eth0: Could not set route: No route to host
Sep 21 21:02:15 jarvis systemd-networkd[567]: eth0: Configured

Looks like the digitalocean-synchronize service is not getting an IPv6 prefix:

Sep 21 20:54:21 jarvis digitalocean-synchronize[351]: Added IPv6 address 2604:A880:0002:00D0:0000:0000:07FD:8001/ on eth0.

[gh2o]

I rebooted my droplet and it seems to be working fine.

What output do you get when you run curl http://169.254.169.254/metadata/v1/interfaces/public/0/ipv6/cidr and curl http://169.254.169.254/metadata/v1/interfaces/public/0/ipv6/?

[chrissnell]

I get the v6 prefix when I curl this. Perhaps its an intermittent failure? Maybe there should be an exit code check from curl and the request gets retried if it's an error.

[gh2o]

I see. So rebooting it fixes the issue?

[chrissnell]

Yes, it does. Intermittent failure.

…

On Fri, Sep 21, 2018 at 4:42 PM Gavin Li ***@***.***> wrote: I see. So rebooting it fixes the issue? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#67 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABBd8uRQKM29gnUOqZl-OlQVp_dRPOuvks5udV1MgaJpZM4WCuNd> .

[chrissnell]

I'm now seeing IPv4 IP setup failures and gateway setup fialures too. Lately, my droplet comes up correctly from a reboot about 50% of the time. I assume it is because of flakiness on the metadata service. Sure would be nice to have some retries with curl.

[chrissnell]

Here are some sanitized logs that show how metadata is sometimes missing:

Dec 01 20:31:01 jarvis systemd[1]: Starting DigitalOcean Synchronization...
Dec 01 20:31:01 jarvis digitalocean-synchronize[267]: Attempting to connect to metadata service ...
Dec 01 20:31:02 jarvis digitalocean-synchronize[301]: Added IPv4 address 138.xxx.xx.xxx/20 on eth0.
Dec 01 20:31:02 jarvis digitalocean-synchronize[306]: Added Anchor IPv4 address 10.x.xx.x/16 on eth0.
Dec 01 20:31:02 jarvis systemd[1]: Started DigitalOcean Synchronization.
-- Reboot --
Dec 05 21:01:03 jarvis systemd[1]: Starting DigitalOcean Synchronization...
Dec 05 21:01:04 jarvis systemd[1]: Started DigitalOcean Synchronization.
-- Reboot --
Dec 08 00:41:19 jarvis systemd[1]: Starting DigitalOcean Synchronization...
Dec 08 00:41:20 jarvis digitalocean-synchronize[335]: Added Anchor IPv4 address 10.x.xx.x/16 on eth0.
Dec 08 00:41:20 jarvis systemd[1]: Started DigitalOcean Synchronization.
-- Reboot --
Dec 13 03:41:46 jarvis systemd[1]: Starting DigitalOcean Synchronization...
Dec 13 03:41:46 jarvis digitalocean-synchronize[321]: Added IPv4 address 138.xxx.xx.xxx/20 on eth0.
Dec 13 03:41:46 jarvis digitalocean-synchronize[329]: Added Anchor IPv4 address 10.x.xx.x/16 on eth0.
Dec 13 03:41:47 jarvis systemd[1]: Started DigitalOcean Synchronization.
-- Reboot --
Dec 20 03:16:28 jarvis systemd[1]: Starting DigitalOcean Synchronization...
Dec 20 03:16:28 jarvis digitalocean-synchronize[252]: Attempting to connect to metadata service ...
Dec 20 03:16:29 jarvis systemd[1]: Started DigitalOcean Synchronization.
-- Reboot --
Dec 21 18:43:44 jarvis systemd[1]: Starting DigitalOcean Synchronization...
Dec 21 18:43:45 jarvis digitalocean-synchronize[333]: Added IPv4 address 138.xxx.xx.xxx/20 on eth0.
Dec 21 18:43:45 jarvis digitalocean-synchronize[342]: Added Anchor IPv4 address 10.x.xx.x/16 on eth0.
Dec 21 18:43:45 jarvis digitalocean-synchronize[360]: Added IPv6 address 2604:A880:0000:00D0:0000:0000:0000:8001/64 on eth0.