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A DNS server for ZeroTier users
https://zerotier.com
BSD 3-Clause "New" or "Revised" License
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Integration tests don't always pass (RFC4193 reverse ptr) #209

Open laduke opened 1 year ago

laduke commented 1 year ago

I've been trying to figure this out. Thought I'd post note in public instead of not. I'm on a mac. Some small random subset of the tests will fail if I run all of them. I'm focusing now on the rfc4193::test_battery_single_domain_named. The reverse ptf will fail, sometimes. I think I've seen other parts fail, but if it does fail, 99% of the time is the reverse ptr. I'm on a mac. (There's a mac bug that is fixed in dev that makes the tests not work at all)

If I sprinkle some longer delays around, they get more reliable, but not 100%

How I've been starting the test, for example:

RUST_BACKTRACE=1 RUST_LOG=debug TOKEN=$(cat test-token.txt) sudo -E cargo test -- rfc4193::test_battery_single_domain_named --nocapture --test-threads 1 | grep "zeronsd\|trust\|integration"

Here are some tracing output. I can't tell why it works in some cases and not in others from the traces. 

bad
Mar 03 16:14:10.731  WARN zeronsd::authority: authority!
Mar 03 16:14:10.733  WARN zeronsd::authority: member Some([]) - Some("")                                                                                       
Mar 03 16:14:10.733  WARN zeronsd::authority: record ZTRecord { fqdn: Name("zt-e750c51646.home.arpa."), custom_name: None, ptr_name: Name("zt-e750c51646.home.arpa."), ips: [fd12:ac4a:1e71:2dc0:c299:93e7:50c5:1646], wildcard: false }
Mar 03 16:14:10.733  INFO zeronsd::authority: Adding new record zt-e750c51646.home.arpa.: (fd12:ac4a:1e71:2dc0:c299:93e7:50c5:1646)
Mar 03 16:14:10.733  WARN zeronsd::authority: ptr V6(Ipv6Network { addr: fd12:ac4a:1e71:2dc0:c299:9300::, prefix: 88 })
Mar 03 16:14:10.733  WARN zeronsd::authority: fta
Mar 03 16:14:10.734  WARN zeronsd::authority: recs Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.2.c.0.c.d.2.1.7.e.1.a.4.c.a.2.1.d.f.ip6.arpa.")
Mar 03 16:14:10.734  INFO zeronsd::authority: Adding/Replacing record 6.4.6.1.5.c.0.5.7.e.3.9.9.9.2.c.0.c.d.2.1.7.e.1.a.4.c.a.2.1.d.f.ip6.arpa.: (zt-e750c51646.home.arpa.)
Mar 03 16:14:10.986  WARN zeronsd::authority: authority!
Mar 03 16:14:10.986  WARN zeronsd::authority: member Some([]) - Some("")                                                                                       
Mar 03 16:14:10.986  WARN zeronsd::authority: record ZTRecord { fqdn: Name("zt-e750c51646.home.arpa."), custom_name: None, ptr_name: Name("zt-e750c51646.home.arpa."), ips: [fd12:ac4a:1e71:2dc0:c299:93e7:50c5:1646], wildcard: false }
Mar 03 16:14:10.986  WARN zeronsd::authority: ptr V6(Ipv6Network { addr: fd12:ac4a:1e71:2dc0:c299:9300::, prefix: 88 })
Mar 03 16:14:10.986  WARN zeronsd::authority: fta                                                                                                              
Mar 03 16:14:10.986  WARN zeronsd::authority: recs Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.2.c.0.c.d.2.1.7.e.1.a.4.c.a.2.1.d.f.ip6.arpa.")
Mar 03 16:14:16.749  WARN zeronsd::authority: authority!
Mar 03 16:14:16.749  WARN zeronsd::authority: member Some([]) - Some("")
Mar 03 16:14:16.749  WARN zeronsd::authority: record ZTRecord { fqdn: Name("zt-e750c51646.home.arpa."), custom_name: None, ptr_name: Name("zt-e750c51646.home.arpa."), ips: [fd12:ac4a:1e71:2dc0:c299:93e7:50c5:1646], wildcard: false }
Mar 03 16:14:16.749  WARN zeronsd::authority: ptr V6(Ipv6Network { addr: fd12:ac4a:1e71:2dc0:c299:9300::, prefix: 88 })
Mar 03 16:14:16.749  WARN zeronsd::authority: fta
Mar 03 16:14:16.749  WARN zeronsd::authority: recs Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.2.c.0.c.d.2.1.7.e.1.a.4.c.a.2.1.d.f.ip6.arpa.")
Mar 03 16:14:22.813  WARN zeronsd::authority: authority!
Mar 03 16:14:22.813  WARN zeronsd::authority: member Some([]) - Some("islay")
Mar 03 16:14:22.813  WARN zeronsd::authority: record ZTRecord { fqdn: Name("zt-e750c51646.home.arpa."), custom_name: Some(Name("islay.home.arpa.")), ptr_name: Name("islay.home.arpa."), ips: [fd12:ac4a:1e71:2dc0:c299:93e7:50c5:1646], wildcard: false }
Mar 03 16:14:22.813  INFO zeronsd::authority: Adding new record islay.home.arpa.: (fd12:ac4a:1e71:2dc0:c299:93e7:50c5:1646)
Mar 03 16:14:22.814  WARN zeronsd::authority: ptr V6(Ipv6Network { addr: fd12:ac4a:1e71:2dc0:c299:9300::, prefix: 88 })
Mar 03 16:14:22.814  WARN zeronsd::authority: fta
Mar 03 16:14:22.814  WARN zeronsd::authority: recs Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.2.c.0.c.d.2.1.7.e.1.a.4.c.a.2.1.d.f.ip6.arpa.")
Mar 03 16:14:22.814  INFO zeronsd::authority: Adding/Replacing record 6.4.6.1.5.c.0.5.7.e.3.9.9.9.2.c.0.c.d.2.1.7.e.1.a.4.c.a.2.1.d.f.ip6.arpa.: (islay.home.arpa.)
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: ResolveError { kind: NoRecordsFound { query: Query { name: Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.2.c.0.c.d.2.1.7.e.1.a.4.c.a.2.1.d.f.ip6.arpa."), query_type: PTR, query_class: IN }, soa: Some(SOA { mname: Name("3.9.9.9.2.c.0.c.d.2.1.7.e.1.a.4.c.a.2.1
.d.f.ip6.arpa."), rname: Name("administrator.3.9.9.9.2.c.0.c.d.2.1.7.e.1.a.4.c.a.2.1.d.f.ip6.arpa."), serial: 1, refresh: 30, retry: 0, expire: -1, minimum: 0 }), negative_ttl: Some(0), response_code: NXDomain, trusted: true } }', tests/service/resolver.rs:48:14

good
Mar 03 16:15:42.448  WARN zeronsd::authority: authority!
Mar 03 16:15:42.451  WARN zeronsd::authority: member Some([]) - Some("")
Mar 03 16:15:42.451  WARN zeronsd::authority: record ZTRecord { fqdn: Name("zt-e750c51646.home.arpa."), custom_name: None, ptr_name: Name("zt-e750c51646.home.arpa."), ips: [fdb1:5644:912e:9388:3199:93e7:50c5:1646], wildcard: false }
Mar 03 16:15:42.451  INFO zeronsd::authority: Adding new record zt-e750c51646.home.arpa.: (fdb1:5644:912e:9388:3199:93e7:50c5:1646)
Mar 03 16:15:42.451  WARN zeronsd::authority: ptr V6(Ipv6Network { addr: fdb1:5644:912e:9388:3199:9300::, prefix: 88 })
Mar 03 16:15:42.451  WARN zeronsd::authority: fta
Mar 03 16:15:42.451  WARN zeronsd::authority: recs Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.3.8.8.3.9.e.2.1.9.4.4.6.5.1.b.d.f.ip6.arpa.")
Mar 03 16:15:42.451  INFO zeronsd::authority: Adding/Replacing record 6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.3.8.8.3.9.e.2.1.9.4.4.6.5.1.b.d.f.ip6.arpa.: (zt-e750c51646.home.arpa.)
Mar 03 16:15:42.667  WARN zeronsd::authority: authority!
Mar 03 16:15:42.668  WARN zeronsd::authority: member Some([]) - Some("")
Mar 03 16:15:42.668  WARN zeronsd::authority: record ZTRecord { fqdn: Name("zt-e750c51646.home.arpa."), custom_name: None, ptr_name: Name("zt-e750c51646.home.arpa."), ips: [fdb1:5644:912e:9388:3199:93e7:50c5:1646], wildcard: false }
Mar 03 16:15:42.668  WARN zeronsd::authority: ptr V6(Ipv6Network { addr: fdb1:5644:912e:9388:3199:9300::, prefix: 88 })
Mar 03 16:15:42.668  WARN zeronsd::authority: fta
Mar 03 16:15:42.668  WARN zeronsd::authority: recs Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.3.8.8.3.9.e.2.1.9.4.4.6.5.1.b.d.f.ip6.arpa.")
Mar 03 16:15:48.700  WARN zeronsd::authority: authority!
Mar 03 16:15:48.701  WARN zeronsd::authority: member Some([]) - Some("")
Mar 03 16:15:48.701  WARN zeronsd::authority: record ZTRecord { fqdn: Name("zt-e750c51646.home.arpa."), custom_name: None, ptr_name: Name("zt-e750c51646.home.arpa."), ips: [fdb1:5644:912e:9388:3199:93e7:50c5:1646], wildcard: false }
Mar 03 16:15:48.701  WARN zeronsd::authority: ptr V6(Ipv6Network { addr: fdb1:5644:912e:9388:3199:9300::, prefix: 88 })
Mar 03 16:15:48.701  WARN zeronsd::authority: fta
Mar 03 16:15:48.701  WARN zeronsd::authority: recs Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.3.8.8.3.9.e.2.1.9.4.4.6.5.1.b.d.f.ip6.arpa.")
Mar 03 16:15:54.442  WARN zeronsd::authority: authority!
Mar 03 16:15:54.442  WARN zeronsd::authority: member Some([]) - Some("islay")
Mar 03 16:15:54.442  WARN zeronsd::authority: record ZTRecord { fqdn: Name("zt-e750c51646.home.arpa."), custom_name: Some(Name("islay.home.arpa.")), ptr_name: Name("islay.home.arpa."), ips: [fdb1:5644:912e:9388:3199:93e7:50c5:1646], wildcard: false }
Mar 03 16:15:54.442  INFO zeronsd::authority: Adding new record islay.home.arpa.: (fdb1:5644:912e:9388:3199:93e7:50c5:1646)
Mar 03 16:15:54.442  WARN zeronsd::authority: ptr V6(Ipv6Network { addr: fdb1:5644:912e:9388:3199:9300::, prefix: 88 })
Mar 03 16:15:54.442  WARN zeronsd::authority: fta
Mar 03 16:15:54.442  WARN zeronsd::authority: recs Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.3.8.8.3.9.e.2.1.9.4.4.6.5.1.b.d.f.ip6.arpa.")
Mar 03 16:15:54.443  INFO zeronsd::authority: Adding/Replacing record 6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.3.8.8.3.9.e.2.1.9.4.4.6.5.1.b.d.f.ip6.arpa.: (islay.home.arpa.)
Mar 03 16:16:00.926  WARN zeronsd::authority: authority!
Mar 03 16:16:00.927  WARN zeronsd::authority: member Some([]) - Some("islay")
Mar 03 16:16:00.927  WARN zeronsd::authority: record ZTRecord { fqdn: Name("zt-e750c51646.home.arpa."), custom_name: Some(Name("islay.home.arpa.")), ptr_name: Name("islay.home.arpa."), ips: [fdb1:5644:912e:9388:3199:93e7:50c5:1646], wildcard: false }
Mar 03 16:16:00.927  WARN zeronsd::authority: ptr V6(Ipv6Network { addr: fdb1:5644:912e:9388:3199:9300::, prefix: 88 })
Mar 03 16:16:00.927  WARN zeronsd::authority: fta
Mar 03 16:16:00.927  WARN zeronsd::authority: recs Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.3.8.8.3.9.e.2.1.9.4.4.6.5.1.b.d.f.ip6.arpa.")
Mar 03 16:16:06.473  WARN zeronsd::authority: authority!
Mar 03 16:16:06.473  WARN zeronsd::authority: member Some([]) - Some("islay")
Mar 03 16:16:06.473  WARN zeronsd::authority: record ZTRecord { fqdn: Name("zt-e750c51646.home.arpa."), custom_name: Some(Name("islay.home.arpa.")), ptr_name: Name("islay.home.arpa."), ips: [fdb1:5644:912e:9388:3199:93e7:50c5:1646], wildcard: false }
Mar 03 16:16:06.474  WARN zeronsd::authority: ptr V6(Ipv6Network { addr: fdb1:5644:912e:9388:3199:9300::, prefix: 88 })
Mar 03 16:16:06.474  WARN zeronsd::authority: fta
Mar 03 16:16:06.474  WARN zeronsd::authority: recs Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.3.8.8.3.9.e.2.1.9.4.4.6.5.1.b.d.f.ip6.arpa.")
Mar 03 16:16:12.436  WARN zeronsd::authority: authority!
Mar 03 16:16:12.436  WARN zeronsd::authority: member Some([]) - Some("islay")
Mar 03 16:16:12.436  WARN zeronsd::authority: record ZTRecord { fqdn: Name("zt-e750c51646.home.arpa."), custom_name: Some(Name("islay.home.arpa.")), ptr_name: Name("islay.home.arpa."), ips: [fdb1:5644:912e:9388:3199:93e7:50c5:1646], wildcard: false }
Mar 03 16:16:12.436  WARN zeronsd::authority: ptr V6(Ipv6Network { addr: fdb1:5644:912e:9388:3199:9300::, prefix: 88 })
Mar 03 16:16:12.436  WARN zeronsd::authority: fta
Mar 03 16:16:12.436  WARN zeronsd::authority: recs Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.3.8.8.3.9.e.2.1.9.4.4.6.5.1.b.d.f.ip6.arpa.")
erikh commented 1 year ago

So this does happen. The problem is that DNS is being flooded in the tests, and sometimes the machine cannot keep up, and UDP kind of does the rest of the damage. I struggled with this, but I'm also on a 24 thread machine, and I doubt your mac is, so it makes it hard to gauge a threshold that will work for everyone.

I don't really have a good answer for you other than "try again", they usually pass after a couple of tries, but again, on smaller core counts it might be more punishing.

Also: you can make test-integration to run the tests as they are intended.

laduke commented 1 year ago

hey thanks for replying. I don't think I've ever had a full run of make test-integration without at least one test failing from this machine. I was thinking what you were saying re perf/load. But now I'm not 100% sure. I've edited the loops from 0..1000 to 0..1, for example, and they still fail (sometimes)

I'm logging the whole reverse_authority_map now at the end of configure_members and sometimes the ptrs are there and sometimes they aren't. Sometimes they are there at first, but before the assertion runs, they aren't there. 

        for (_, authority) in self.reverse_authority_map.clone() {
            warn!("REVERSE {:#?}", authority.authority.records().await);
        }

and... I'm running make test-integration again to get good example output and it keeps passing 😑

OK. Got one. Too much output:

Mar 06 15:07:44.353 ERROR zeronsd::authority: tick
Mar 06 15:07:44.611 ERROR zeronsd::authority: REVERSE {
    RrKey {
        name: LowerName(
            Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
        ),
        record_type: NS,
    }: RecordSet {
        name: Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
        record_type: NS,
        dns_class: IN,
        ttl: 30,
        records: [
            Record {
                name_labels: Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
                rr_type: NS,
                dns_class: IN,
                ttl: 30,
                rdata: Some(
                    NS(
                        Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
                    ),
                ),
            },
        ],
        rrsigs: [],
        serial: 1,
    },
    RrKey {
        name: LowerName(
            Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
        ),
        record_type: SOA,
    }: RecordSet {
        name: Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
        record_type: SOA,
        dns_class: IN,
        ttl: 30,
        records: [
            Record {
                name_labels: Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
                rr_type: SOA,
                dns_class: IN,
                ttl: 30,
                rdata: Some(
                    SOA(
                        SOA {
                            mname: Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
                            rname: Name("administrator.3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
                            serial: 1,
                            refresh: 30,
                            retry: 0,
                            expire: -1,
                            minimum: 0,
                        },
                    ),
                ),
            },
        ],
        rrsigs: [],
        serial: 1,
    },
    RrKey {
        name: LowerName(
            Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
        ),
        record_type: PTR,
    }: RecordSet {
        name: Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
        record_type: PTR,
        dns_class: IN,
        ttl: 60,
        records: [
            Record {
                name_labels: Name("6.4.6.1.5.c.0.5.7.e.3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
                rr_type: PTR,
                dns_class: IN,
                ttl: 60,
                rdata: Some(
                    PTR(
                        Name("zt-e750c51646.home.arpa."),
                    ),
                ),
            },
        ],
        rrsigs: [],
        serial: 1,
    },
}

Mar 06 15:07:44.611 ERROR zeronsd::authority: REVERSE {
    RrKey {
        name: LowerName(
            Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
        ),
        record_type: NS,
    }: RecordSet {
        name: Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
        record_type: NS,
        dns_class: IN,
        ttl: 30,
        records: [
            Record {
                name_labels: Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
                rr_type: NS,
                dns_class: IN,
                ttl: 30,
                rdata: Some(
                    NS(
                        Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
                    ),
                ),
            },
        ],
        rrsigs: [],
        serial: 1,
    },
RrKey {
        name: LowerName(
            Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
        ),
        record_type: SOA,
    }: RecordSet {
        name: Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
        record_type: SOA,
        dns_class: IN,
        ttl: 30,
        records: [
            Record {
                name_labels: Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
                rr_type: SOA,
                dns_class: IN,
                ttl: 30,
                rdata: Some(
                    SOA(
                        SOA {
                            mname: Name("3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
                            rname: Name("administrator.3.9.9.9.1.0.7.a.7.d.d.e.f.8.5.8.4.6.b.d.d.f.ip6.arpa."),
                            serial: 1,
                            refresh: 30,
                            retry: 0,
                            expire: -1,
                            minimum: 0,
                        },
                    ),
                ),
            },
        ],
        rrsigs: [],
        serial: 1,
    },
}
laduke commented 1 year ago

Might be getting closer: it seems like there are 2 items in reverse_authority_map, one has the ptrs, one doesn't. If the no ptr item is second in the list, the lookup fails. If they are in the other order, it works.

erikh commented 1 year ago

I haven't looked that deep in a very long time, and I don't really have the time to right now. Maybe in a week or two.

erikh commented 1 year ago

Would love to hear what you come up with though, and I'm happy to review any patches you file.

erikh commented 1 year ago

Also I wanted to point out that the battery counts (the 0..1000) are there for a reason. UDP being a lossy protocol should fail naturally, but the service (and trust-dns's resolver) should retry failing connections. In practice (e.g., in the server you run yourself) this works fine, but in tests it gets overwhelmed, was my best theory.

That said, there could always be a real bug in there. Some of it was slapped together very quickly.

laduke commented 1 year ago

Looking forward to figuring it out. It's motivating me to explore the app.

Thanks for the note about the battery tests.

erikh commented 1 year ago

Cool. I'd love to hear about the solution when you find it, I'm curious now. :)

laduke commented 1 year ago

Haven't been able to look at it much for a few days. But here's what i know

In configure_members we iterate over the passed in reverse_authority_map 

        self.reverse_authority_map
            .iter()
            .for_each(|(network, authority)| {
                error!("reverse_records.insert {} - {:?}", network, vec![authority.domain_name.clone()]);
                reverse_records.insert(network, vec![authority.domain_name.clone()]);
            });

which is a hashmap and gives you items in non deterministic order.

The order they pop out makes a difference:

doesn't pass

Mar 10 13:42:02.553 ERROR zeronsd::authority: reverse_records.insert fd23:3cca:ac27:ef83:2499:9300::/88 - [LowerName(Name("3.9.9.9.4.2.3.8.f.e.7.2.c.a.a.c.c.3.3.2.d.f.ip6.arpa."))]                                                                                                                                          
mar 10 13:42:02.553 ERROR zeronsd::authority: reverse_records.insert fd23:3cca:ac27:ef83:2499:93e7:50c5:1646/88 - [LowerName(Name("3.9.9.9.4.2.3.8.f.e.7.2.c.a.a.c.c.3.3.2.d.f.ip6.arpa."))]

pass

Mar 10 14:02:27.632 ERROR zeronsd::authority: reverse_records.insert fdd3:ecf5:726d:95c5:899:93e7:50c5:1646/88 - [LowerName(Name("3.9.9.9.8.0.5.c.5.9.d.6.2.7.5.f.c.e.3.d.d.f.ip6.arpa."))]
Mar 10 14:02:27.632 ERROR zeronsd::authority: reverse_records.insert fdd3:ecf5:726d:95c5:899:9300::/88 - [LowerName(Name("3.9.9.9.8.0.5.c.5.9.d.6.2.7.5.f.c.e.3.d.d.f.ip6.arpa."))]

full address vs subnet order very strange to me at the moment

the ptr records always end up on the fd23:3cca:ac27:ef83:2499:9300::/88 "short/subnet" network, and never on the fdd3:ecf5:726d:95c5:899:93e7:50c5:1646/88 "long/ full address" network, as far as i've seen