AS overview
Test target: 2a06:5680::1 · static prefix probe · address space: PA · prefixes announced: 2
prefix(es): 2a06:5680::/30, 2a06:5684::/30
Targets & per-vantage-point probe results (1 target(s) across 7 vantage point(s))
Source codes (hover any badge for full description): CUR=curated · NS/SOA/MX=DNS records · SPF=SPF TXT · DRV=holder-derived (www, ns1, mail, gw, …) · ATL=RIPE Atlas · PDB=PeeringDB · WHOIS=RIPE whois · RDAP=RIPE RDAP · HIT=IPv6 Hitlist · RTR=in-prefix path hop (router) · PRB=static prefix probe · SYN=synthetic prefix::1 fallback
| Target IP / hostname | Source | SRB host (SOX, Belgrade) | DE host (Berlin) | DE host (Düsseldorf) | NL host (go6lab) | ITA host (Karsolink) | SLO host (6connect) | SLO host (T-2) | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ||
2a06:5680::1 | prb | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✗ | ✗ | ? | ? | - | ✓ | ✓ | ? | ? | ✓ | ✗ | ✗ | ? | ? | - | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | - |
VIX / AAIX / SAIX / TIROL-IX / ERA-IX peering
Not an VIX / AAIX / SAIX / TIROL-IX / ERA-IX member, but our traceroute path crosses the VIX / AAIX / SAIX / TIROL-IX / ERA-IX LAN from SRB host (SOX, Belgrade), NL host (go6lab), SLO host (6connect), SLO host (T-2) - reached via an VIX / AAIX / SAIX / TIROL-IX / ERA-IX-resident transit operator.
RPKI & ASPA
2 of 2 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a06:5680::/30 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS31543 /29 maxLen 48 (ripe); AS210947 /29 maxLen 48 (ripe) |
2a06:5684::/30 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS31543 /29 maxLen 48 (ripe); AS210947 /29 maxLen 48 (ripe) |
ICMPv6 Type 2 (Packet Too Big) acceptance - active test
Vantage points disagree about Type 2 acceptance - transit ASes on one path may be filtering Type 2 even though the destination's stack accepts it on another path:
- SRB host (SOX, Belgrade): Type 2 honored. Forged PTB accepted; next response shrunk. (ICMPv6 Echo + forged PTB)
- DE host (Berlin): Type 2 honored. Forged PTB accepted; next response shrunk. (ICMPv6 Echo + forged PTB)
- DE host (Düsseldorf): inconclusive: no Echo Reply to 1300-byte probe. (ICMPv6 Echo + forged PTB)
- NL host (go6lab): Type 2 honored. Forged PTB accepted; next response shrunk. (ICMPv6 Echo + forged PTB)
- ITA host (Karsolink): inconclusive: no Echo Reply to 1300-byte probe. (ICMPv6 Echo + forged PTB)
- SLO host (6connect): Type 2 honored. Forged PTB accepted; next response shrunk. (ICMPv6 Echo + forged PTB)
- SLO host (T-2): Type 2 honored. Forged PTB accepted; next response shrunk. (ICMPv6 Echo + forged PTB)
Why they disagree - reachability mismatch: One vantage couldn't drive a flow at all to this destination (no Echo Reply or no responding TCP port), so the active test had no behavioural change to observe. The other vantage's verdict is the only meaningful one here.
Failure detail - what to grep in your logs
| vantage | our source | your target | method | result | tested (UTC) |
|---|---|---|---|---|---|
| belgrade | 2a09:ab81::91 | 2a06:5680::1 | icmp6-echo | honored | 2026-09-23T13:35:56Z |
| berlin | 2a06:d1c1:10b::cccc | 2a06:5680::1 | icmp6-echo | honored | 2026-09-23T13:35:58Z |
| duseldorf | 2a06:d1c1:10d::aaaa | 2a06:5680::1 | icmp6-echo | no_echo | 2026-09-23T13:36:00Z |
| go6lab | 2a00:8642:42::75 | 2a06:5680::1 | icmp6-echo | honored | 2026-09-23T13:36:44Z |
| karsolink | 2a12:d8c0:105a:9001::a154 | 2a06:5680::1 | icmp6-echo | no_echo | 2026-09-23T13:35:49Z |
| odin | 2607:fae0:a000::42 | 2a06:5680::1 | icmp6-echo | honored | 2026-09-23T13:35:59Z |
| t2 | 2a01:261:313:b814:2a0:98ff:fe5b:13e4 | 2a06:5680::1 | icmp6-echo | honored | 2026-09-23T13:35:56Z |
Attempt log (belgrade):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ no_tcp: connect failed: [Errno 111] Connection refusedtls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (berlin):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ no_tcp: connect failed: [Errno 111] Connection refusedtls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (duseldorf):
icmp6-echo→ no_echo: no Echo Reply to 1300-byte probedns-tcp→ no_tcp: connect failed: timed outtls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (go6lab):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ no_tcp: connect failed: timed outtls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (karsolink):
icmp6-echo→ no_echo: no Echo Reply to 1300-byte probedns-tcp→ no_tcp: connect failed: timed outtls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (odin):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ no_tcp: connect failed: [Errno 111] Connection refusedtls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (t2):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ no_tcp: connect failed: [Errno 111] Connection refusedtls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
To match the corresponding ICMPv6 packet on your side (host firewall, AS edge, or transit tap), look for our PTBs around the timestamps above:
sudo tcpdump -i any -n -e 'icmp6 and ip6[40] = 2 and (src host 2607:fae0:a000::42 or src host 2a00:8642:42::75 or src host 2a01:261:313:b814:2a0:98ff:fe5b:13e4 or src host 2a06:d1c1:10b::cccc or src host 2a06:d1c1:10d::aaaa or src host 2a09:ab81::91 or src host 2a12:d8c0:105a:9001::a154)'
If you see our PTBs arriving but the destination's TCP/Echo flow does not shrink, the drop is in the destination kernel (cause 3 below). If you don't see them at all, drop is upstream of you (cause 2). If you only see them from some of our source IPs but not others, the drop is path-asymmetric - at least one transit on the differing route is filtering.
Where the path divergence is
Per-vantage probe + verdict (headline):
- belgrade: probe
icmp6-echo→ verdicthonored - berlin: probe
icmp6-echo→ verdicthonored - duseldorf: probe
icmp6-echo→ verdictno_echo - go6lab: probe
icmp6-echo→ verdicthonored - karsolink: probe
icmp6-echo→ verdictno_echo - odin: probe
icmp6-echo→ verdicthonored - t2: probe
icmp6-echo→ verdicthonored
Full per-method matrix (all four methods run at each vantage):
| vantage | icmp6-echo | dns-tcp | tls | http |
|---|---|---|---|---|
| belgrade | honored | no_tcp | no_tcp | no_tcp |
| berlin | honored | no_tcp | no_tcp | no_tcp |
| duseldorf | no_echo | no_tcp | no_tcp | no_tcp |
| go6lab | honored | no_tcp | no_tcp | no_tcp |
| karsolink | no_echo | no_tcp | no_tcp | no_tcp |
| odin | honored | no_tcp | no_tcp | no_tcp |
| t2 | honored | no_tcp | no_tcp | no_tcp |
✓ All vantages agree on method(s): icmp6-echo - the headline-method spread above is dispatcher noise, not a real Type 2 disagreement.
These vantage-level disagreements are rooted somewhere in the forward paths. Joining each per-vantage traceroute against the IP→AS lookup from our global yarrp mesh, the first hop where the paths land in different ASes is the most likely site of the offending filter / unreachable AS / Type 2 drop.
Suspect transit ASes (ranked by how often they appear at the divergence point on the path of the worse-classifying vantage): AS31543, AS210947, AS6939.
- From belgrade (open/Type-2=honored) the path enters AS31543 at hop 9; from berlin (open/Type-2=honored) the same hop is in AS210947. Last common AS: AS210947. The disagreement is most likely rooted in one of those two transit ASes.
- From belgrade (open/Type-2=honored) the path enters AS210947 at hop 10; from go6lab (open/Type-2=honored) the same hop is in AS31543. Last common AS: AS210947. The disagreement is most likely rooted in one of those two transit ASes.
- From belgrade (open/Type-2=honored) the path enters AS210947 at hop 10; from t2 (open/Type-2=honored) the same hop is in AS31543. Last common AS: AS31543. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS50629 at hop 5; from go6lab (open/Type-2=honored) the same hop is in AS6939. Last common AS: AS210947. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS50629 at hop 5; from odin (open/Type-2=honored) the same hop is in AS6939. Last common AS: AS210947. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS210947 at hop 9; from t2 (open/Type-2=honored) the same hop is in AS31543. Last common AS: AS31543. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (all_blocked/Type-2=no_echo) the path enters AS31543 at hop 15; from t2 (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS31543. The disagreement is most likely rooted in one of those two transit ASes.
- From go6lab (open/Type-2=honored) the path enters AS6939 at hop 6; from odin (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS210947. The disagreement is most likely rooted in one of those two transit ASes.
- From odin (open/Type-2=honored) the path enters AS210947 at hop 10; from t2 (open/Type-2=honored) the same hop is in AS31543. Last common AS: AS31543. The disagreement is most likely rooted in one of those two transit ASes.
Diagnosis is path-level, not packet-level: it tells you which transit AS is the prime suspect, not exactly which firewall rule is to blame. Use the tracepath6 output below (when available) for per-hop PMTU evidence on the same path.
✨ Diagnostic interpretation
An operator-targeted diagnostic interpretation can be generated for this AS on demand. The pipeline holds the raw verdicts and the per-hop walk; an AI pass synthesises where to start looking. Click the button below to run it.
⚠ Reachability depends on the path, not only on this AS. 5 of our vantages reach this network and 2 do not, and the failures share an entry point that the successful paths do not use. Paths that fail enter via MIX-IT -> AS31543. Paths that succeed arrive via AS210947, VIX -> AS31543.
| vantage | result | entry point | entry hop |
|---|---|---|---|
| SRB host (SOX, Belgrade) | reaches | AS210947 | 2a06:5680::1 |
| DE host (Berlin) | reaches | AS210947 | 2a06:5680::1 |
| DE host (Düsseldorf) | fails | MIX-IT -> AS31543 | 2a00:15c0:0:20::1 |
| NL host (go6lab) | reaches | AS210947 | 2a06:5680::1 |
| ITA host (Karsolink) | fails | MIX-IT -> AS31543 | 2a00:15c0:0:21::2 |
| SLO host (6connect) | reaches | AS210947 | 2a06:5680::1 |
| SLO host (T-2) | reaches | VIX -> AS31543 | 2a00:15c0:0:2a::2 |
This shows where reachability changes, not who is at fault: it is equally consistent with the entry network dropping the traffic and with this AS’ edge treating traffic from that direction differently. Entry points are resolved against the PeeringDB exchange registry.
Multi-vantage path map
Every hop of all vantages’ traceroutes toward the target, drawn left→right, grouped into per-AS bubbles (a hop seen from several vantages is one shared bubble, so converging paths merge). It answers two questions per vantage — shown on each source bubble as echo ✓/⚠/✗ · trace ✓/✗: did the destination reply to ICMPv6 Echo (✓ honored, ⚠ replied but PTB not honored, ✗ no reply), and did the traceroute reach it. A line to the target is drawn only when that vantage got an echo reply — solid if the PTB was honored, dashed if not (reachable but a broken-PMTUD / RFC 4890 violation). The path depth still shows how far the traceroute itself got, and runs of unanswered (* *) hops collapse into one dashed “silent” bubble. Open full size ↗
- ● SRB host (SOX, Belgrade)
- ● DE host (Berlin)
- ● DE host (Düsseldorf)
- ● NL host (go6lab)
- ● ITA host (Karsolink)
- ● SLO host (6connect)
- ● SLO host (T-2)
- ── solid line = echo reply, PTB honored (clean reach)
- — — dashed line = echo reply but PTB not honored (RFC 4890 violation)
- no line = no echo reply (never reached)
- ◉ target: green = clean, amber = reachable-but-violation / unreachable
- ⚠ suspected drop AS
- ⋯ silent (unanswered) hops
- ● IXP hop
From SRB host (SOX, Belgrade) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 23.0ms
4/4
Echo 1500B (DF) 22.6ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a09:ab81::1 | 0.2ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | sox-pn.sox.rs 2001:7f8:1e:8::3a | 0.2ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | e0-33.core2.beg1.he.net 2001:470:1:6e5::1 | 0.9ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 4 | e0-34.core2.bts1.he.net 2001:470:0:33f::2 | 8.7ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | * | - | 40% | - | |
| 6 | 2001:7f8:30:0:2:1:3:1543 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX | 22.6ms | 0% | - | NA |
| 7 | ipv6.core.as31543.net 2a00:15c0:0:2a::2 | 27.8ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 8 | ipv6.core.as31543.net 2a00:15c0:0:5::1 | 22.9ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 9 | ipv6.core.as31543.net 2a00:15c0:0:40::2 | 23.2ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 10 | 2a06:5680::1 | 22.3ms | 0% | AS210947 | ZUGSPITZNET-AS - ZugspitzNet GmbH, AT |
Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.023ms pmtu 1500
1: _gateway 0.620ms
1: _gateway 0.484ms
2: sox-pn.sox.rs 0.507ms
3: e0-33.core2.beg1.he.net 1.213ms
4: e0-34.core2.bts1.he.net 8.287ms
5: 100ge0-0-0-2.core1.vie1.he.net 11.000ms
6: 2001:7f8:30:0:2:1:3:1543 22.169ms asymm 3
7: ipv6.core.as31543.net 23.086ms asymm 4
8: ipv6.core.as31543.net 23.242ms asymm 5
9: ipv6.core.as31543.net 23.510ms asymm 6
10: 2a06:5680::1 23.027ms reached
Resume: pmtu 1500 hops 10 back 7 From DE host (Berlin) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 14.0ms
4/4
Echo 1500B (DF) 13.6ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | xe-0-0-13-178.gw01.ber01.as59645.net 2a06:d1c1:100:b::1 | 0.2ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02 | 0.8ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | ae0-40.cr10.muc02.lwlcom.net 2a00:c380:b200:230::178 | 11.3ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae0-10.cr10.muc01.lwlcom.net 2a00:c380:b200:230::177 | 11.3ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 5 | 2a00:c380:f001::eb | 11.9ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 6 | ipv6.core.as31543.net 2a00:15c0:0:6::1 | 12.5ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 7 | ipv6.core.as31543.net 2a00:15c0:0:42::1 | 13.0ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 8 | ipv6.core.as31543.net 2a00:15c0:0:40::2 | 29.5ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 9 | 2a06:5680::1 | 14.0ms | 0% | AS210947 | ZUGSPITZNET-AS - ZugspitzNet GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.025ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.591ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.543ms
2: ae0-2453.cr10.ber01.lwlcom.net 0.948ms
3: ae0-40.cr10.muc02.lwlcom.net 11.705ms
4: ae0-10.cr10.muc01.lwlcom.net 11.904ms
5: 2a00:c380:f001::eb 12.058ms
6: ipv6.core.as31543.net 12.467ms
7: ipv6.core.as31543.net 13.142ms
8: ipv6.core.as31543.net 14.762ms
9: 2a06:5680::1 14.342ms reached
Resume: pmtu 1500 hops 9 back 9 From DE host (Düsseldorf) all blocked
filter likely at: past AS31543 (MYNET-AS) · min PMTU on path: 1500
0/4
Echo small (56B) -
0/4
Echo 1500B (DF) -
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | xe-0-0-12-142.gw01.dus01.as59645.net 2a06:d1c1:100:d::1 | 0.2ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1 | 3.1ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | lag13.agr3-dus3.bb.wiit.network 2001:4ba0:ffe9:7d::1 | 3.6ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 4 | lag11.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:115::3 | 0.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 5 | lag0-vl1011.core1-fra-ix.bb.wiit.network 2001:4ba0:ffe9:8a::2 | 4.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | lag0-vl1001.core1-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103e::1 | 6.9ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 7 | lag0-vl6.core2-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103b::1 | 7.0ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 8 | 2001:4ba0:ffe9:b8 | 11.5ms | 0% | - | |
| 9 | lag0-vl1009.core1-muc-eq3.bb.wiit.network 2001:4ba0:ffe9:a7::1 | 11.6ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 10 | lag0-vl1001.core1-pda-vsix.bb.wiit.network 2001:4ba0:ffe9:da::2 | 22.0ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 11 | lag0-vl1001.core1-mil-mix.bb.wiit.network 2001:4ba0:ffe9:db::2 | 20.0ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 12 | mynet-gmbh-v6.mix-it.net 2001:7f8:b:100:1d1:a5d3:1543:48 | 25.7ms | 0% | - | NA |
| 13 | ipv6.core.as31543.net 2a00:15c0:0:20::1 | 27.7ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 14 | ipv6.core.as31543.net 2a00:15c0:0:55::1 | 26.5ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 15 | ipv6.core.as31543.net 2a00:15c0:0:e::2 | 35.6ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 16 | ipv6.core.as31543.net 2a00:15c0:0:4a::2 | 28.9ms | - | AS31543 | MYNET-AS - myNet GmbH, AT |
| 17 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.017ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.317ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.276ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.120ms
3: no reply
4: lag30.core3-dus1.bb.wiit.network 0.531ms
5: lag0-vl1011.core1-fra-ix.bb.wiit.network 4.499ms
6: lag0-vl1001.core1-nbg-ncd.bb.wiit.network 7.110ms
7: lag0-vl6.core2-nbg-ncd.bb.wiit.network 7.231ms
8: lag0-vl1006.core2-muc2.bb.wiit.network 12.810ms
9: lag0-vl1009.core1-muc-eq3.bb.wiit.network 9.760ms
10: lag0-vl1001.core1-pda-vsix.bb.wiit.network 20.522ms
11: lag0-vl1001.core1-mil-mix.bb.wiit.network 20.290ms asymm 9
12: mynet-gmbh-v6.mix-it.net 25.895ms asymm 10
13: ipv6.core.as31543.net 27.615ms asymm 11
14: ipv6.core.as31543.net 26.699ms asymm 12
15: ipv6.core.as31543.net 35.619ms asymm 8
16: ipv6.core.as31543.net 29.204ms asymm 9
17: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 From NL host (go6lab) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 32.7ms
4/4
Echo 1500B (DF) 32.0ms
yes
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a00:8642:42::2 | 1.8ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 2.2ms | 0%* | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 3 | speed-ix.he.net 2001:7f8:b7::a500:6939:1 | 6.1ms | 0% | - | NA |
| 4 | be2.core4.fra1.he.net 2001:470:e:38::2 | 11.1ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | be8.core1.prg1.he.net 2001:470:e:1e::2 | 18.5ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | be3.core1.vie1.he.net 2001:470:e:a7::2 | 21.5ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | 2001:7f8:30:0:2:1:3:1543 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX | 30.1ms | 0% | - | NA |
| 8 | ipv6.core.as31543.net 2a00:15c0:0:2a::2 | 32.6ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 9 | ipv6.core.as31543.net 2a00:15c0:0:5::1 | 30.9ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 10 | ipv6.core.as31543.net 2a00:15c0:0:40::2 | 32.1ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 11 | 2a06:5680::1 | 33.8ms | 0% | AS210947 | ZUGSPITZNET-AS - ZugspitzNet GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.034ms pmtu 1500
1: 2a00:8642:42::2 1.655ms
1: 2a00:8642:42::2 2.223ms
2: gw.friends.steffann.nl 1.892ms
3: speed-ix.he.net 8.265ms
4: be2.core4.fra1.he.net 12.457ms
5: be8.core1.prg1.he.net 18.484ms
6: be3.core1.vie1.he.net 22.675ms
7: 2001:7f8:30:0:2:1:3:1543 30.894ms
8: ipv6.core.as31543.net 33.180ms
9: ipv6.core.as31543.net 33.214ms
10: ipv6.core.as31543.net 31.830ms
11: 2a06:5680::1 31.827ms reached
Resume: pmtu 1500 hops 11 back 11 From ITA host (Karsolink) all blocked
filter likely at: past AS31543 (MYNET-AS) · min PMTU on path: 1500
0/4
Echo small (56B) -
0/4
Echo 1500B (DF) -
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | karsolink-01.net.karsolink.com 2a12:d8c0:105a:9001::1 | 0.3ms | 0%* | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 2 | 2a12:d8c0:109f:121::a1 | 0.4ms | 0%* | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 3 | * | - | 40% | - | |
| 4 | mynet-gmbh-v6.mix-it.net 2001:7f8:b:100:1d1:a5d3:1543:48 | 14.1ms | 0% | - | NA |
| 5 | ipv6.core.as31543.net 2a00:15c0:0:21::2 | 14.9ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 6 | ipv6.core.as31543.net 2a00:15c0:0:1f::1 | 16.7ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 7 | ipv6.core.as31543.net 2a00:15c0:0:1d::2 | 23.2ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 8 | ipv6.core.as31543.net 2a00:15c0:0:4a::2 | 20.3ms | - | AS31543 | MYNET-AS - myNet GmbH, AT |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - |
Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: no reply
2: no reply
3: 2a12:d8c0:101f:103::1 8.800ms
4: mynet-gmbh-v6.mix-it.net 16.011ms
5: ipv6.core.as31543.net 16.069ms
6: ipv6.core.as31543.net 19.887ms
7: ipv6.core.as31543.net 17.909ms asymm 8
8: ipv6.core.as31543.net 17.671ms asymm 7
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 From SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 19.5ms
4/4
Echo 1500B (DF) 19.0ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | fw1-lju.6connect.com 2607:fae0:a000::2 | 0.5ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | ccr-to-fw-ccr1-gw-lju.6connect.com 2607:fae0:a000:2::2 | 0.7ms | - | AS8038 | 6CONNECT - 6connect, Inc., US |
| 3 | 2a03:a100:0:201:1::1 | 0.8ms | 0% | AS56635 | XENYA - XENYA inzeniring, proizvodnja in trgovina, d.o.o. Ljubljana, SI |
| 4 | e0-1.core1.lju1.he.net 2001:470:1:5be::1 | 2.0ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | 100ge0-0-0-5.core1.vie1.he.net 2001:470:0:578::1 | 9.5ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | 2001:7f8:30:0:2:1:3:1543 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX | 18.5ms | 0% | - | NA |
| 7 | ipv6.core.as31543.net 2a00:15c0:0:2a::2 | 18.2ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 8 | ipv6.core.as31543.net 2a00:15c0:0:5::1 | 21.7ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 9 | ipv6.core.as31543.net 2a00:15c0:0:40::2 | 19.3ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 10 | 2a06:5680::1 | 19.2ms | 0% | AS210947 | ZUGSPITZNET-AS - ZugspitzNet GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.026ms pmtu 9000
1: fw1-lju.6connect.com 0.502ms
1: fw1-lju.6connect.com 0.477ms
2: no reply
3: 2a03:a100:0:201:1::1 1.424ms
4: 2a03:a100:0:201:1::1 1.838ms pmtu 1500
4: e0-1.core1.lju1.he.net 2.337ms
5: 100ge0-0-0-5.core1.vie1.he.net 7.746ms
6: 2001:7f8:30:0:2:1:3:1543 18.255ms asymm 4
7: ipv6.core.as31543.net 19.385ms asymm 5
8: ipv6.core.as31543.net 20.886ms asymm 7
9: ipv6.core.as31543.net 19.289ms asymm 7
10: 2a06:5680::1 19.576ms reached
Resume: pmtu 1500 hops 10 back 8 From SLO host (T-2) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 21.5ms
4/4
Echo 1500B (DF) 21.1ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | 2a01:260:1::225 | 4.2ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 3 | 2a01-260-1-1--9a.core6.t-2.net 2a01:260:1:1::9a | 2.5ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | 2a01-260-1-1--38.core6.t-2.net 2a01:260:1:1::38 | 2.9ms | - | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | 100ge0-0-0-31.core1.vie1.he.net 2001:470:0:4a8::1 | 14.1ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | 2001:7f8:30:0:2:1:3:1543 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX | 19.2ms | 0% | - | NA |
| 7 | ipv6.core.as31543.net 2a00:15c0:0:2a::2 | 28.0ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 8 | ipv6.core.as31543.net 2a00:15c0:0:2a::2 | 27.8ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 9 | ipv6.core.as31543.net 2a00:15c0:0:5::1 | 26.7ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
| 10 | ipv6.core.as31543.net 2a00:15c0:0:40::2 | 25.6ms | 0% | AS31543 | MYNET-AS - myNet GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.026ms pmtu 1500
1: 2a01:261:313:b814::1 0.872ms
1: no reply
2: 2a01:260:1::225 7.799ms
3: 2a01-260-1-1--9c.core6.t-2.net 2.773ms
4: 2a01-260-1-1--38.core6.t-2.net 3.031ms asymm 3
5: 100ge0-0-0-31.core1.vie1.he.net 11.826ms
6: 100ge0-0-0-31.core1.vie1.he.net 13.271ms asymm 5
7: ipv6.core.as31543.net 20.771ms asymm 6
8: ipv6.core.as31543.net 21.313ms asymm 7
9: ipv6.core.as31543.net 21.552ms asymm 8
10: 2a06:5680::1 20.663ms reached
Resume: pmtu 1500 hops 10 back 9