Unable to bind to IPv6
I had an issue with my VPS that I didn't notice for a while where I had lost my IPv6 addressing. After contacting support they have restored the IPv6 address, but I'm now unable to bind to the address. I've a feeling it's more either my configuration or the VPS configuration at fault, not tor, but I thought I'd throw it out for ideas, as I'm not that confident (yet) with IPv6 stuff. Here's the interface: 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether a6:6a:08:73:42:27 brd ff:ff:ff:ff:ff:ff altname enp0s18 inet xxx.yyy.87.222/26 brd xxx.yyy.87.255 scope global eth0 valid_lft forever preferred_lft forever inet6 aaaa:bbbb:1a:10::1/64 scope global dadfailed tentative valid_lft forever preferred_lft forever inet6 fe80::a46a:8ff:fe73:4227/64 scope link valid_lft forever preferred_lft forever root@fw1475:~# ip -6 route aaaa:bbbb:1a:10::/64 dev eth0 proto kernel metric 256 pref medium fe80::/64 dev eth0 proto kernel metric 256 pref medium default via aaaa:bbbb:1a:10:a46a:8ff:fe73:4227 dev eth0 proto static metric 1024 pref medium And the netplan configuration: root@fw1475:~# netplan status Online state: online DNS Addresses: 127.0.0.53 (stub) DNS Search: . ● 1: lo ethernet UNKNOWN/UP (unmanaged) MAC Address: 00:00:00:00:00:00 Addresses: 127.0.0.1/8 ::1/128 ● 2: eth0 ethernet UP (networkd: eth0) MAC Address: a6:6a:08:73:42:27 (Red Hat, Inc.) Addresses: xxx.yyy.87.222/26 aaaa:bbbb:1a:10::1/64 fe80::a46a:8ff:fe73:4227/64 (link) DNS Addresses: 1.1.1.1 1.0.0.1 Routes: default via xxx.yyy.87.193 (static) xxx.yyy.87.192/26 from xxx.yyy.87.222 (link) aaaa:bbbb:1a:10::/64 metric 256 fe80::/64 metric 256 default via aaaa:bbbb:1a:10:a46a:8ff:fe73:4227 metric 1024 (static) And this is what I get from the IPv6 OR port, determined by commenting/uncommenting the relevant line in my previously working configuration: 2024-12-14T20:36:38.782783+00:00 fw1475 tor[2317]: Dec 14 20:36:38.782 [warn] Failed to parse/validate config: Failed to bind one of the listener ports. 2024-12-14T20:36:38.782821+00:00 fw1475 tor[2317]: Dec 14 20:36:38.782 [err] Reading config failed--see warnings above. Any ideas/help would be gratefully accepted. Cheers, Eddie
Hi, it seems that your address is not reachable for me: From fe80::6e62:6dff:fe85:b8f9 icmp_seq=1 Destination unreachable: Address unreachable From fe80::6e62:6dff:fe85:b8f9 icmp_seq=2 Destination unreachable: Address unreachable From fe80::6e62:6dff:fe85:b8f9 icmp_seq=3 Destination unreachable: Address unreachable From fe80::6e62:6dff:fe85:b8f9 icmp_seq=4 Destination unreachable: Address unreachable Did you check that you can actually have IPv6 connectivity FROM your server? All the best, -GH On Monday, December 16th, 2024 at 12:37 AM, Eddie via tor-relays <tor-relays@lists.torproject.org> wrote:
Here's the interface:
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
And the netplan configuration:
Any ideas/help would be gratefully accepted.
Cheers, Eddie
On 2024-12-16 06:39, George Hartley via tor-relays wrote:
Hi,
it seems that your address is not reachable for me:
You were pinging his link local fe80 address, which isn't routable. He is having troubles listening on the real IPv6 address, which he obfuscated. On 2024-12-15 19:37, Eddie via tor-relays wrote:
Can you give your actual config? It's hard to diagnose without that.
Ah that is my bad, my ISP offers me IPv6 but I got it disabled entirely on my AVM model / router and through GRUB's kernel command line parameters. IPv4 is what I am used to, but at least I can say I learned something new today, thanks for the heads up. If your public IPv6 address is indeed reachable (you can use a site like ping.eu to check), make sure your torrc ORPort format is correct and that you don't have any typo's in the address (due to the format, they are much harder to spot, at least to my eyes). Here's how to to it "properly", according to the manual:
ORPort [address:]PORT|auto [flags]
Advertise this port to listen for connections from Tor clients and servers. This option is required to be a Tor server. Set it to "auto" to have Tor pick a port for you. Set it to 0 to not run an ORPort at all. This option can occur more than once. (Default: 0)
And according to the sample torrc configuration file from GitLab:
## See https://community.torproject.org/relay for details.
Good luck with everything. -GH On Tuesday, December 17th, 2024 at 2:42 AM, Red Oaive via tor-relays tor-relays@lists.torproject.org wrote:
On 2024-12-16 06:39, George Hartley via tor-relays wrote:
Hi,
it seems that your address is not reachable for me:
On 2024-12-15 19:37, Eddie via tor-relays wrote:
participants (3)
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Eddie -
George Hartley -
Red Oaive