My IPv6 Yahoo contact informed me that PTB permissions are missing on a new platform and that this should be resolved over the next 24 hours.
Frank -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Matthew Luckie Sent: Tuesday, August 20, 2013 11:23 AM To: Jeroen Massar Cc: [email protected] Subject: Re: l.yimg.com (Yahoo!) over IPv6 I tried from work (2001:48d0:101:501:d267:e5ff:fe14:a701): $ host l.yimg.com l.yimg.com is an alias for fd-geoycs-l.gy1.b.yahoodns.net. fd-geoycs-l.gy1.b.yahoodns.net is an alias for ds-fo-anyycs-l.ay1.b.yahoodns.net. ds-fo-anyycs-l.ay1.b.yahoodns.net has address 216.115.97.236 ds-fo-anyycs-l.ay1.b.yahoodns.net has IPv6 address 2001:4998:f011:1fb::c:1101 And there were no MTU issues. However, for a bunch of the addresses you supplied from your VP: ds-fo-anyycs-l.ay1.b.yahoodns.net has IPv6 address 2001:4998:f011:1fb::c:1101 ds-fo-anyycs-l.ay1.b.yahoodns.net has IPv6 address 2001:4998:f007:1fb::c:1103 ds-fo-anyycs-l.ay1.b.yahoodns.net has IPv6 address 2001:4998:8:1::2000 ds-fo-anyycs-l.ay1.b.yahoodns.net has IPv6 address 2001:4998:f007:1fb::c:1101 ds-fo-anyycs-l.ay1.b.yahoodns.net has IPv6 address 2001:4998:8:1::2001 ds-pxe-vnycs-p.gy1.b.yahoodns.net has IPv6 address 2406:2000:f008:1fd::c:1101 ds-pxe-vnycs-p.gy1.b.yahoodns.net has IPv6 address 2406:2000:ac:5::c:1101 ds-pxe-vnycs-p.gy1.b.yahoodns.net has IPv6 address 2406:2000:f008:1fd::c:1103 ds-pxe-vnycs-p.gy1.b.yahoodns.net has IPv6 address 2406:2000:fc:402::c:2203 They failed, presumably because they filter the PTB messages. To reproduce: scamper -O warts -o delme.warts -F ipfw -I "tbit -u 'http://l.yimg.com/pv/static/misc/index.html' 2406:2000:ac:5::c:1101" sc_wartsdump delme.warts The test works on FreeBSD and MacOS up until the MacOS they removed IPFW from. tbit from 2001:48d0:101:501:d267:e5ff:fe14:a701 to 2001:4998:8:1::2000 list id: 0, name: default cycle id: 0 user-id: 0 start: Tue Aug 20 09:14:53 2013 290885 sport: 58765, dport: 80 client-mss: 1440, server-mss: 1440 type: pmtud, result: pmtud-fail mtu: 1280, ptb-retx: 4 app: http, url: http://l.yimg.com/pv/static/misc/index.html [ 0.048] TX SYN 64 0:0 [ 0.060] RX SYN/ACK 64 0:1 [ 0.098] TX 60 1:1 [ 0.148] TX 254 1:1(194) [ 0.160] RX 60 1:195 [ 0.169] RX 1500 1:195(1440) [ 0.169] RX 1500 1441:195(1440) [ 0.169] RX 1500 2881:195(1440) [ 0.169] RX 1500 4321:195(1440) [ 0.169] RX 376 5761:195(316) [ 0.198] TX PTB 1280 mtu = 1280 [ 0.248] TX 60 195:1 [ 3.169] RX 1500 1:195(1440) [ 3.169] TX PTB 1280 mtu = 1280 [ 9.169] RX 1500 1:195(1440) [ 9.169] TX PTB 1280 mtu = 1280 [ 10.169] RX FIN 60 6077:195 [ 10.169] TX 60 195:1 [ 21.169] RX 1500 1:195(1440) [ 21.169] TX PTB 1280 mtu = 1280 [ 45.168] RX 1500 1:195(1440) tbit from 2001:48d0:101:501:d267:e5ff:fe14:a701 to 2001:4998:8:1::2001 list id: 0, name: default cycle id: 0 user-id: 0 start: Tue Aug 20 09:16:16 2013 561876 sport: 58778, dport: 80 client-mss: 1440, server-mss: 1440 type: pmtud, result: pmtud-fail mtu: 1280, ptb-retx: 4 app: http, url: http://l.yimg.com/pv/static/misc/index.html [ 0.049] TX SYN 64 0:0 [ 0.061] RX SYN/ACK 64 0:1 [ 0.099] TX 60 1:1 [ 0.148] TX 254 1:1(194) [ 0.160] RX 60 1:195 [ 0.168] RX 1500 1:195(1440) [ 0.168] RX 1500 1441:195(1440) [ 0.168] RX 1500 2881:195(1440) [ 0.168] RX 1500 4321:195(1440) [ 0.168] RX 376 5761:195(316) [ 0.199] TX PTB 1280 mtu = 1280 [ 0.248] TX 60 195:1 [ 3.168] RX 1500 1:195(1440) [ 3.168] TX PTB 1280 mtu = 1280 [ 9.168] RX 1500 1:195(1440) [ 9.168] TX PTB 1280 mtu = 1280 [ 10.168] RX FIN 60 6077:195 [ 10.168] TX 60 195:1 [ 21.168] RX 1500 1:195(1440) [ 21.168] TX PTB 1280 mtu = 1280 [ 45.168] RX 1500 1:195(1440) tbit from 2001:48d0:101:501:d267:e5ff:fe14:a701 to 2406:2000:ac:5::c:1101 list id: 0, name: default cycle id: 0 user-id: 0 start: Tue Aug 20 09:17:32 2013 976874 sport: 58782, dport: 80 client-mss: 1440, server-mss: 1440 type: pmtud, result: pmtud-fail mtu: 1280, ptb-retx: 4 app: http, url: http://l.yimg.com/pv/static/misc/index.html [ 0.050] TX SYN 64 0:0 [ 0.343] RX SYN/ACK 64 0:1 [ 0.343] TX 60 1:1 [ 0.394] TX 254 1:1(194) [ 0.688] RX 60 1:195 [ 0.728] RX 1500 1:195(1440) [ 0.728] TX PTB 1280 mtu = 1280 [ 0.728] RX 1500 1441:195(1440) [ 0.728] RX 1500 2881:195(1440) [ 0.728] RX 1500 4321:195(1440) [ 0.728] RX 376 5761:195(316) [ 0.778] TX 60 195:1 [ 3.728] RX 1500 1:195(1440) [ 3.728] TX PTB 1280 mtu = 1280 [ 9.728] RX 1500 1:195(1440) [ 9.728] TX PTB 1280 mtu = 1280 [ 10.729] RX FIN 60 6077:195 [ 10.729] TX 60 195:1 [ 21.728] RX 1500 1:195(1440) [ 21.728] TX PTB 1280 mtu = 1280 [ 45.728] RX 1500 1:195(1440)
