Issue seems resolved. I just retested and routing between HE and Level 3 looks normal now. On Thu, Apr 12, 2012 at 9:49 AM, Anurag Bhatia <me@anuragbhatia.com> wrote:

I emailed about this to friends at HE yesterday. Heard they are working on it.

I can see forwward as well as reverse paths via Europe - so very likely they lost connectivity/BGP session with Level3 in US or something like that.

Let's see how it goes.

On Thu, Apr 12, 2012 at 9:46 AM, Derek Ivey <derek@derekivey.com> wrote:

...

I'm seeing the same thing from my area (Harrisburg, PA). Strange.

*Show Level 3 (Harrisburg, PA) Traceroute to www.he.net* 1 vl-17.car1.Pittsburgh3.Level3.**net<http://vl-17.car1.Pittsburgh3.Level3.net>(2001:1900:35::21) 208 msec 200 msec 276 msec 2 vl-4044.car1.Washington1.**Level3.net<http://vl-4044.car1.Washington1.Level3.net>(2001:1900:4:1::2B9) 48 msec 208 msec 200 msec 3 vl-4083.car2.Washington1.**Level3.net<http://vl-4083.car2.Washington1.Level3.net>(2001:1900:4:1::DE) 200 msec 312 msec 104 msec 4 vl-4061.car1.NewYork2.Level3.**net<http://vl-4061.car1.NewYork2.Level3.net>(2001:1900:4:1::106) 160 msec 100 msec 124 msec 5 vl-4041.car1.NewYork1.Level3.**net<http://vl-4041.car1.NewYork1.Level3.net>(2001:1900:4:1::101) 80 msec 156 msec 56 msec 6 vl-4086.edge3.London1.Level3.**net<http://vl-4086.edge3.London1.Level3.net>(2001:1900:6:1::11) 212 msec 116 msec 248 msec 7 vl-4081.edge4.London1.Level3.**net<http://vl-4081.edge4.London1.Level3.net>(2001:1900:5:1::106) 200 msec vl-4081.edge3.London1.Level3.**net<http://vl-4081.edge3.London1.Level3.net>(2001:1900:5:1::102) 200 msec 204 msec 8 2001:1900:5:3::11E 208 msec 204 msec 208 msec 9 10gigabitethernet7-4.core1.**nyc4.he.net<http://10gigabitethernet7-4.core1.nyc4.he.net>(2001:470:0:128::1) 204 msec 40 msec 200 msec 10 10gigabitethernet5-3.core1.**lax1.he.net<http://10gigabitethernet5-3.core1.lax1.he.net>(2001:470:0:10E::1) 408 msec 404 msec 260 msec 11 10gigabitethernet7-4.core1.**fmt2.he.net<http://10gigabitethernet7-4.core1.fmt2.he.net>(2001:470:0:18D::1) 368 msec 380 msec 416 msec 12 10gigabitethernet2-1.core1.**fmt1.he.net<http://10gigabitethernet2-1.core1.fmt1.he.net>(2001:470:0:2D::1) 256 msec 400 msec 224 msec

C:\Users\Derek>tracert 2001:1900:35::21 (from my HE tunnel)

Tracing route to vl-17.car1.Pittsburgh3.Level3.**net<http://vl-17.car1.Pittsburgh3.Level3.net>[2001:1900:35::21] over a maximum of 30 hops: ... 3 16 ms 14 ms 21 ms gige-g4-12.core1.ash1.he.net[2001:470:0:90::1] 4 25 ms 25 ms 24 ms 10gigabitethernet1-2.core1.**nyc4.he.net<http://10gigabitethernet1-2.core1.nyc4.he.net>[2001:470:0:36::2] 5 88 ms 90 ms 98 ms 10gigabitethernet1-2.core1.**lon1.he.net<http://10gigabitethernet1-2.core1.lon1.he.net>[2001:470:0:128::2] 6 88 ms 89 ms 89 ms ge-5-3-2.edge4.London.Level3.**net<http://ge-5-3-2.edge4.London.Level3.net>[2001:1900:5:3::11d] 7 88 ms 89 ms 89 ms vl-4080.edge4.London1.Level3.**net<http://vl-4080.edge4.London1.Level3.net>[2001:1900:5:1::105] 8 158 ms 158 ms 158 ms vl-4086.car1.NewYork1.Level3.**net<http://vl-4086.car1.NewYork1.Level3.net>[2001:1900:6:1::12] 9 163 ms 163 ms 163 ms ae-2-4047.edge2.Washington12.**Level3.net<http://ae-2-4047.edge2.Washington12.Level3.net>[2001:1900:4:1::3b9] 10 163 ms 163 ms 163 ms ae-1-4080.edge1.Washington12.**Level3.net<http://ae-1-4080.edge1.Washington12.Level3.net>[2001:1900:4:1::3d9] 11 164 ms 164 ms 164 ms vl-4046.car1.Washington1.**Level3.net<http://vl-4046.car1.Washington1.Level3.net>[2001:1900:4:1::3b2] 12 177 ms 177 ms 187 ms vl-17.car1.Pittsburgh3.Level3.**net<http://vl-17.car1.Pittsburgh3.Level3.net>[2001:1900:35::21]

Trace complete.

On 4/12/2012 12:08 AM, Dave Sotnick wrote:

...

Hello Nanog,

Looks like Level3's only IPv6 route to HE is via London right now:

Show Level 3 (Las Vegas, NV) Traceroute to www.he.net 1 vl-5.bar1.LasVegas1.Level3.net (2001:1900:2F::1) 0 msec 0 msec 0 msec 2 vl-11.bar2.LasVegas1.Level3.**net<http://vl-11.bar2.LasVegas1.Level3.net>(2001:1900:4:1::3C6) 0 msec 0 msec 0 msec 3 vl-4045.car1.Denver1.Level3.**net<http://vl-4045.car1.Denver1.Level3.net>(2001:1900:4:1::276) 84 msec 228 msec 224 msec 4 vl-4081.car2.Denver1.Level3.**net<http://vl-4081.car2.Denver1.Level3.net>(2001:1900:4:1::32) 20 msec 20 msec 20 msec 5 vl-4042.edge1.Chicago2.Level3.**net<http://vl-4042.edge1.Chicago2.Level3.net>(2001:1900:4:1::36) 44 msec 44 msec 44 msec 6 vl-4067.car1.Chicago1.Level3.**net<http://vl-4067.car1.Chicago1.Level3.net>(2001:1900:4:1::1D) 48 msec 212 msec 224 msec 7 vl-4061.car2.NewYork2.Level3.**net<http://vl-4061.car2.NewYork2.Level3.net>(2001:1900:4:1::22) 184 msec 216 msec 232 msec 8 vl-4080.car1.NewYork2.Level3.**net<http://vl-4080.car1.NewYork2.Level3.net>(2001:1900:4:1::F1) 80 msec 80 msec 80 msec 9 vl-4041.car1.NewYork1.Level3.**net<http://vl-4041.car1.NewYork1.Level3.net>(2001:1900:4:1::101) 80 msec 80 msec 80 msec 10 vl-4086.edge3.London1.Level3.**net<http://vl-4086.edge3.London1.Level3.net>(2001:1900:6:1::11) 176 msec 144 msec 164 msec 11 vl-4081.edge3.London1.Level3.**net<http://vl-4081.edge3.London1.Level3.net>(2001:1900:5:1::102) 136 msec 132 msec vl-4081.edge4.London1.Level3.**net<http://vl-4081.edge4.London1.Level3.net>(2001:1900:5:1::106) 148 msec 12 2001:1900:5:3::11E 160 msec 156 msec 160 msec 13 10gigabitethernet7-4.core1.**nyc4.he.net<http://10gigabitethernet7-4.core1.nyc4.he.net>(2001:470:0:128::1) 344 msec 208 msec 200 msec 14 10gigabitethernet5-3.core1.**lax1.he.net<http://10gigabitethernet5-3.core1.lax1.he.net>(2001:470:0:10E::1) 276 msec 260 msec 268 msec 15 10gigabitethernet7-4.core1.**fmt2.he.net<http://10gigabitethernet7-4.core1.fmt2.he.net>(2001:470:0:18D::1) 272 msec 272 msec 324 msec 16 10gigabitethernet2-1.core1.**fmt1.he.net<http://10gigabitethernet2-1.core1.fmt1.he.net>(2001:470:0:2D::1) 288 msec 272 msec 276 msec 17 * * * 18 * * *

Confirmed by L3's looking glasses ( http://lg.level3.net/**traceroute/traceroute.cgi?** site=lvg1&target=www.he.net&**ipv6=true<http://lg.level3.net/traceroute/traceroute.cgi?site=lvg1&target=www.he.net&ipv6=true> ) and my own corporate IPv6 connection from Level 3.

I opened a ticket with Level 3. Anyone else seen this?

-Dave

--

Anurag Bhatia anuragbhatia.com or simply - http://[2001:470:26:78f::5] if you are on IPv6 connected network!

Twitter: @anurag_bhatia <https://twitter.com/#!/anurag_bhatia> Linkedin: http://linkedin.anuragbhatia.com

-- Anurag Bhatia anuragbhatia.com or simply - http://[2001:470:26:78f::5] if you are on IPv6 connected network! Twitter: @anurag_bhatia <https://twitter.com/#!/anurag_bhatia> Linkedin: http://linkedin.anuragbhatia.com