March 2017 - Test - lists.nanog.org

IPv6 oddness in Comcast land...
by valdis.kletnieks＠vt.edu 20 Mar '17

20 Mar '17

Trying to figure out what the heck is going on here. Any good explanations cheerfully accepted. Background: Home internet router is a Linksys WRT1200AC that had been running OpenWRT 15.05.01. IPv6 worked just fine - Comcast handed me a /60 via DHCP-PD and no issues. I reflashed it to Lede 17.01, and after doing all the reconfig, I'm hitting a really strange IPv6 issue. Symptoms - IPv6 still configures correctly, but IPv6 packets appear to go out and disappear into the ether when they leave the Linksys. Doing a traceroute to any IPv6 destination makes things work again - for a while (from 15 minutes to an hour or two). As seen from my laptop (I have the matching tcpdump from the outbound interface on the Linksys): [~] ping -6 -c 3 listserv.vt.edu PING listserv.vt.edu(listserv.ipv6.vt.edu (2001:468:c80:2105:211:43ff:feda:d769)) 56 data bytes --- listserv.vt.edu ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2070ms [~] traceroute -6 listserv.vt.edu traceroute to listserv.vt.edu (2001:468:c80:2105:211:43ff:feda:d769), 30 hops max, 80 byte packets 1 2601:5c0:c001:69e2::1 (2601:5c0:c001:69e2::1) 2.417 ms 3.077 ms 5.358 ms 2 * * * 3 * * * 4 * * * 5 * * * 6 * hu-0-10-0-7-pe04.ashburn.va.ibone.comcast.net (2001:558:0:f5c1::2) 31.478 ms 31.975 ms 7 2001:559::d16 (2001:559::d16) 32.406 ms 17.102 ms 24.751 ms 8 2001:550:2:2f::a (2001:550:2:2f::a) 23.245 ms 23.519 ms 22.185 ms 9 2607:b400:f0:2003::f0 (2607:b400:f0:2003::f0) 29.782 ms 28.604 ms 29.891 ms 10 2607:b400:90:ff05::f1 (2607:b400:90:ff05::f1) 30.423 ms * 30.680 ms 11 * * * 12 listserv.ipv6.vt.edu (2001:468:c80:2105:211:43ff:feda:d769) 34.562 ms 39.072 ms 24.633 ms [~] ping -6 -c 3 listserv.vt.edu PING listserv.vt.edu(listserv.ipv6.vt.edu (2001:468:c80:2105:211:43ff:feda:d769)) 56 data bytes 64 bytes from listserv.ipv6.vt.edu (2001:468:c80:2105:211:43ff:feda:d769): icmp_seq=1 ttl=53 time=33.3 ms 64 bytes from listserv.ipv6.vt.edu (2001:468:c80:2105:211:43ff:feda:d769): icmp_seq=2 ttl=53 time=24.3 ms 64 bytes from listserv.ipv6.vt.edu (2001:468:c80:2105:211:43ff:feda:d769): icmp_seq=3 ttl=53 time=46.0 ms --- listserv.vt.edu ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2003ms rtt min/avg/max/mdev = 24.334/34.595/46.093/8.927 ms So it looks like something times out somewhere and fails to pass packets back. TCP connections don't keep IPv6 alive. I have a browser window that auto-updates every 5 minutes, and a SmokePing process on a Raspberri Pi uploads to a server at work every few minutes, and those eventually drop back to IPv4 when the IPv6 TCP fails to connect. And normal UDP doesn't seem to keep it alive - NTP pointing at IPv6 peers loses connectivity as well. But a traceroute wakes it up. It's almost like some router is losing the route to me out of the FIB, and fixes it when it has to handle a packet on the CPU slow path (like send back a 'time exceeded'). But I'm mystified why this started when I reflashed my router.

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difference with caching when connected to telia internet
by Aaron Gould 18 Mar '17

18 Mar '17

Regarding, caching services like Netflix OCA and Google GGC, does anyone know if there is something strange that occurs when connected to Telia BGP AS1299 ? .meaning, if I have local Netflix/google caches, and then later I establish a BGP session for Internet with Telia/BGP 1299, would there be something that would make netflix and google caches reachable via Telia look better than my local ones ?! -Aaron

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AT&T ISP Customers: Streaming Issues
by Scott Eiswirth 17 Mar '17

17 Mar '17

Anyone an AT&T DSP or Fiber customer having issues with streaming music, videos, or games? [DigiComm Systems Inc.] Scott Eiswirth | Network Engineer Office: (504) 212-0486 Mobile: (504) 881-6006 Fax: (504) 212-6772 www.digicommsystems.com

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Weekly Routing Table Report
by cscora＠apnic.net 17 Mar '17

17 Mar '17

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, MENOG, SAFNOG, SdNOG, BJNOG, CaribNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net For historical data, please see http://thyme.rand.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. Routing Table Report 04:00 +10GMT Sat 18 Mar, 2017 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 638006 Prefixes after maximum aggregation (per Origin AS): 249297 Deaggregation factor: 2.56 Unique aggregates announced (without unneeded subnets): 308468 Total ASes present in the Internet Routing Table: 56540 Prefixes per ASN: 11.28 Origin-only ASes present in the Internet Routing Table: 48937 Origin ASes announcing only one prefix: 21715 Transit ASes present in the Internet Routing Table: 7603 Transit-only ASes present in the Internet Routing Table: 215 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 41 Max AS path prepend of ASN ( 55644) 36 Prefixes from unregistered ASNs in the Routing Table: 72 Numnber of instances of unregistered ASNs: 73 Number of 32-bit ASNs allocated by the RIRs: 17731 Number of 32-bit ASNs visible in the Routing Table: 13780 Prefixes from 32-bit ASNs in the Routing Table: 55776 Number of bogon 32-bit ASNs visible in the Routing Table: 46 Special use prefixes present in the Routing Table: 2 Prefixes being announced from unallocated address space: 411 Number of addresses announced to Internet: 2837968708 Equivalent to 169 /8s, 39 /16s and 247 /24s Percentage of available address space announced: 76.7 Percentage of allocated address space announced: 76.7 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 98.5 Total number of prefixes smaller than registry allocations: 211466 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 175063 Total APNIC prefixes after maximum aggregation: 50204 APNIC Deaggregation factor: 3.49 Prefixes being announced from the APNIC address blocks: 174394 Unique aggregates announced from the APNIC address blocks: 71975 APNIC Region origin ASes present in the Internet Routing Table: 7931 APNIC Prefixes per ASN: 21.99 APNIC Region origin ASes announcing only one prefix: 2219 APNIC Region transit ASes present in the Internet Routing Table: 1134 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 41 Number of APNIC region 32-bit ASNs visible in the Routing Table: 2770 Number of APNIC addresses announced to Internet: 761082244 Equivalent to 45 /8s, 93 /16s and 49 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-137529 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 194687 Total ARIN prefixes after maximum aggregation: 93337 ARIN Deaggregation factor: 2.09 Prefixes being announced from the ARIN address blocks: 197063 Unique aggregates announced from the ARIN address blocks: 90389 ARIN Region origin ASes present in the Internet Routing Table: 17842 ARIN Prefixes per ASN: 11.04 ARIN Region origin ASes announcing only one prefix: 6642 ARIN Region transit ASes present in the Internet Routing Table: 1771 Average ARIN Region AS path length visible: 3.8 Max ARIN Region AS path length visible: 23 Number of ARIN region 32-bit ASNs visible in the Routing Table: 1850 Number of ARIN addresses announced to Internet: 1107752352 Equivalent to 66 /8s, 6 /16s and 245 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-397212 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 171515 Total RIPE prefixes after maximum aggregation: 84327 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 166749 Unique aggregates announced from the RIPE address blocks: 100928 RIPE Region origin ASes present in the Internet Routing Table: 23788 RIPE Prefixes per ASN: 7.01 RIPE Region origin ASes announcing only one prefix: 10974 RIPE Region transit ASes present in the Internet Routing Table: 3370 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 28 Number of RIPE region 32-bit ASNs visible in the Routing Table: 5632 Number of RIPE addresses announced to Internet: 710474624 Equivalent to 42 /8s, 88 /16s and 251 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-207259 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 80095 Total LACNIC prefixes after maximum aggregation: 17673 LACNIC Deaggregation factor: 4.53 Prefixes being announced from the LACNIC address blocks: 81282 Unique aggregates announced from the LACNIC address blocks: 38006 LACNIC Region origin ASes present in the Internet Routing Table: 5705 LACNIC Prefixes per ASN: 14.25 LACNIC Region origin ASes announcing only one prefix: 1554 LACNIC Region transit ASes present in the Internet Routing Table: 1037 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 3228 Number of LACNIC addresses announced to Internet: 170963616 Equivalent to 10 /8s, 48 /16s and 178 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-266652 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 16539 Total AfriNIC prefixes after maximum aggregation: 3694 AfriNIC Deaggregation factor: 4.48 Prefixes being announced from the AfriNIC address blocks: 18107 Unique aggregates announced from the AfriNIC address blocks: 6813 AfriNIC Region origin ASes present in the Internet Routing Table: 1031 AfriNIC Prefixes per ASN: 17.56 AfriNIC Region origin ASes announcing only one prefix: 326 AfriNIC Region transit ASes present in the Internet Routing Table: 202 Average AfriNIC Region AS path length visible: 4.8 Max AfriNIC Region AS path length visible: 22 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 300 Number of AfriNIC addresses announced to Internet: 87176448 Equivalent to 5 /8s, 50 /16s and 53 /24s AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 4538 5564 4190 74 ERX-CERNET-BKB China Education and Rese 7545 3761 391 259 TPG-INTERNET-AP TPG Telecom Limited, AU 17974 2994 905 72 TELKOMNET-AS2-AP PT Telekomunikasi Indo 4766 2751 11134 752 KIXS-AS-KR Korea Telecom, KR 9829 2728 1499 540 BSNL-NIB National Internet Backbone, IN 9808 2297 8698 33 CMNET-GD Guangdong Mobile Communication 4755 2070 421 220 TATACOMM-AS TATA Communications formerl 45899 1897 1320 108 VNPT-AS-VN VNPT Corp, VN 4808 1648 1786 447 CHINA169-BJ China Unicom Beijing Provin 24560 1561 579 256 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 22773 3667 2969 150 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 6327 3274 1333 84 SHAW - Shaw Communications Inc., CA 18566 2186 405 109 MEGAPATH5-US - MegaPath Corporation, US 6389 2068 3671 39 BELLSOUTH-NET-BLK - BellSouth.net Inc., 20115 1977 2079 392 CHARTER-NET-HKY-NC - Charter Communicat 209 1784 5068 643 CENTURYLINK-US-LEGACY-QWEST - Qwest Com 16509 1737 3325 558 AMAZON-02 - Amazon.com, Inc., US 30036 1718 319 409 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom 6983 1689 854 231 ITCDELTA - Earthlink, Inc., US 701 1578 10583 650 UUNET - MCI Communications Services, In Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 39891 3334 171 18 ALJAWWALSTC-AS , SA 20940 3056 1124 2169 AKAMAI-ASN1 , US 9121 2656 1691 18 TTNET , TR 34984 2010 328 384 TELLCOM-AS , TR 8551 1650 377 40 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 13188 1646 99 58 TRIOLAN , UA 12479 1521 1033 50 UNI2-AS , ES 12389 1346 1263 551 ROSTELECOM-AS , RU 9198 1319 352 23 KAZTELECOM-AS , KZ 6849 1265 355 21 UKRTELNET , UA Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 10620 3544 545 160 Telmex Colombia S.A., CO 8151 2491 3375 542 Uninet S.A. de C.V., MX 11830 1817 369 57 Instituto Costarricense de Electricidad 7303 1553 998 249 Telecom Argentina S.A., AR 6503 1541 437 53 Axtel, S.A.B. de C.V., MX 6147 1167 377 27 Telefonica del Peru S.A.A., PE 28573 1066 2290 192 CLARO S.A., BR 3816 1004 479 183 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 11664 983 280 35 Techtel LMDS Comunicaciones Interactiva 17072 933 118 407 TOTAL PLAY TELECOMUNICACIONES SA DE CV, Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 1309 399 45 LINKdotNET-AS, EG 36903 718 361 122 MT-MPLS, MA 37611 697 67 6 Afrihost, ZA 36992 598 1375 26 ETISALAT-MISR, EG 24835 497 722 14 RAYA-AS, EG 8452 426 1474 16 TE-AS TE-AS, EG 37492 399 318 73 ORANGE-TN, TN 29571 367 36 10 CITelecom-AS, CI 15399 339 35 7 WANANCHI-KE, KE 2018 271 327 74 TENET-1, ZA Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 4538 5564 4190 74 ERX-CERNET-BKB China Education and Rese 7545 3761 391 259 TPG-INTERNET-AP TPG Telecom Limited, AU 22773 3667 2969 150 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 10620 3544 545 160 Telmex Colombia S.A., CO 39891 3334 171 18 ALJAWWALSTC-AS , SA 6327 3274 1333 84 SHAW - Shaw Communications Inc., CA 20940 3056 1124 2169 AKAMAI-ASN1 , US 17974 2994 905 72 TELKOMNET-AS2-AP PT Telekomunikasi Indo 4766 2751 11134 752 KIXS-AS-KR Korea Telecom, KR 9829 2728 1499 540 BSNL-NIB National Internet Backbone, IN Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 22773 3667 3517 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7545 3761 3502 TPG-INTERNET-AP TPG Telecom Limited, AU 10620 3544 3384 Telmex Colombia S.A., CO 39891 3334 3316 ALJAWWALSTC-AS , SA 6327 3274 3190 SHAW - Shaw Communications Inc., CA 17974 2994 2922 TELKOMNET-AS2-AP PT Telekomunikasi Indonesia, I 9121 2656 2638 TTNET , TR 9808 2297 2264 CMNET-GD Guangdong Mobile Communication Co.Ltd. 9829 2728 2188 BSNL-NIB National Internet Backbone, IN 18566 2186 2077 MEGAPATH5-US - MegaPath Corporation, US Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Network Transit AS Description 65001 PRIVATE 5.143.176.0/20 15468 KLGELECS-AS 38, Teatralnaya st 65602 UNALLOCATED 8.225.192.0/24 30372 SUNESYS2 - Sunesys, LLC, US 65001 PRIVATE 31.172.192.0/20 15468 KLGELECS-AS 38, Teatralnaya st 65001 PRIVATE 31.172.192.0/21 15468 KLGELECS-AS 38, Teatralnaya st 65001 PRIVATE 31.172.200.0/21 15468 KLGELECS-AS 38, Teatralnaya st 65001 PRIVATE 31.172.208.0/21 15468 KLGELECS-AS 38, Teatralnaya st 65001 PRIVATE 31.172.216.0/21 15468 KLGELECS-AS 38, Teatralnaya st 65000 PRIVATE 31.219.177.0/25 8966 ETISALAT-AS P.O. Box 1150, Dub 65000 PRIVATE 31.219.177.128/25 8966 ETISALAT-AS P.O. Box 1150, Dub 65534 PRIVATE 36.37.120.0/24 4800 LINTASARTA-AS-AP Network Acces Complete listing at http://thyme.rand.apnic.net/current/data-badAS Prefixes from private and non-routed address space (Global) ----------------------------------------------------------- Prefix Origin AS Description 100.69.225.0/24 18403 FPT-AS-AP The Corporation for Financing & Promo 100.123.218.0/24 18403 FPT-AS-AP The Corporation for Financing & Promo Complete listing at http://thyme.rand.apnic.net/current/data-dsua Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 23.157.128.0/17 393899 -Reserved AS-, ZZ 23.161.128.0/17 393899 -Reserved AS-, ZZ 27.100.7.0/24 56096 UNKNOWN 41.76.232.0/21 203496 AB-TELECOM , RU 41.77.248.0/21 203496 AB-TELECOM , RU 41.78.12.0/23 203496 AB-TELECOM , RU 41.78.180.0/23 37265 -Reserved AS-, ZZ 41.242.132.0/23 203496 AB-TELECOM , RU 43.224.140.0/24 38197 SUNHK-DATA-AS-AP Sun Network (Hong Kong) Limited - 43.224.141.0/24 38197 SUNHK-DATA-AS-AP Sun Network (Hong Kong) Limited - Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:13 /10:36 /11:103 /12:280 /13:536 /14:1047 /15:1794 /16:13223 /17:7759 /18:13378 /19:24653 /20:38326 /21:41114 /22:75220 /23:62526 /24:356617 /25:554 /26:413 /27:292 /28:35 /29:19 /30:25 /31:1 /32:26 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6327 3068 3274 SHAW - Shaw Communications Inc., CA 39891 2896 3334 ALJAWWALSTC-AS , SA 22773 2843 3667 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 18566 2079 2186 MEGAPATH5-US - MegaPath Corporation, US 9121 1872 2656 TTNET , TR 30036 1527 1718 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communi 10620 1461 3544 Telmex Colombia S.A., CO 6389 1375 2068 BELLSOUTH-NET-BLK - BellSouth.net Inc., US 13188 1371 1646 TRIOLAN , UA 6983 1326 1689 ITCDELTA - Earthlink, Inc., US Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1616 2:846 4:25 5:2495 6:34 8:1055 12:1817 13:92 14:1788 15:22 16:2 17:113 18:129 19:1 20:52 23:2142 24:1863 25:2 27:2379 31:1899 32:89 33:5 34:1 35:19 36:380 37:2551 38:1349 39:45 40:100 41:2904 42:461 43:1899 44:63 45:2448 46:2714 47:114 49:1220 50:972 51:18 52:746 54:358 55:6 56:4 57:41 58:1626 59:994 60:387 61:1937 62:1493 63:1922 64:4582 65:2188 66:4543 67:2265 68:1199 69:3334 70:1307 71:577 72:2146 74:2627 75:399 76:423 77:1435 78:1661 79:1316 80:1350 81:1399 82:960 83:727 84:869 85:1750 86:483 87:1147 88:786 89:2059 90:171 91:6160 92:992 93:2373 94:2370 95:2818 96:568 97:359 98:943 99:85 100:155 101:1249 103:14037 104:2801 105:165 106:485 107:1560 108:818 109:2610 110:1299 111:1723 112:1162 113:1329 114:1044 115:1730 116:1773 117:1688 118:2059 119:1615 120:952 121:1093 122:2354 123:2049 124:1530 125:1817 128:709 129:503 130:418 131:1399 132:506 133:190 134:607 135:220 136:517 137:422 138:1839 139:516 140:374 141:519 142:735 143:908 144:765 145:169 146:1036 147:662 148:1374 149:561 150:701 151:945 152:730 153:306 154:760 155:985 156:557 157:618 158:443 159:1434 160:565 161:734 162:2449 163:518 164:790 165:1158 166:388 167:1232 168:2585 169:763 170:2956 171:285 172:971 173:1806 174:802 175:728 176:1762 177:4034 178:2498 179:1120 180:2186 181:1911 182:2221 183:1052 184:835 185:9087 186:3210 187:2198 188:2447 189:1778 190:8100 191:1257 192:9284 193:5791 194:4654 195:3841 196:1965 197:1266 198:5549 199:5867 200:7387 201:4089 202:10221 203:9806 204:4472 205:2753 206:2999 207:3107 208:3904 209:3935 210:3952 211:2113 212:2810 213:2508 214:863 215:65 216:5893 217:2017 218:834 219:620 220:1708 221:908 222:723 223:1153 End of report

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any issue with Centurylink yesterday
by T Kawasaki 17 Mar '17

17 Mar '17

Guys, Is there any issues with centurylink yesterday? Through out day, peering from major iSPs to Centurylink had higher latency yesterday. I looked out now, it seems to settle down for now. Tatsuya

4 5

Re: ARIN contact needed: something bad happens with legacy IPv4 block's reverse delegations
by Alberto Delgado 17 Mar '17

17 Mar '17

Me too. We have a 164.138.208.0/22 and we have issues with dns reverse too We sent an email to ripe support, but no answer yet El 2017-03-17 10:53, Stephane Bortzmeyer escribió: > On Fri, Mar 17, 2017 at 12:03:58PM +0300, > Eygene Ryabinkin <rea+nanog(a)grid.kiae.ru> wrote > a message of 71 lines which said: > >> Seems like the other /16 from 144.in-addr.arpa are affected too >> (at least). > > Also in 164.in-addr.arpa, it seems?

1 1

Government agency renting or selling IP space
by Mel Beckman 17 Mar '17

17 Mar '17

I have a government agency client with a number of /24s that they acquired back in the 1990s when they operated as an ISP for other agencies. They are interested in renting or selling these addresses. Are there any existing ARIN or other legal restrictions against government organizations doing this? -mel beckman

6 14

Microsoft Skype for Business Contact - Broken PMTUD
by Reuben Farrelly 16 Mar '17

16 Mar '17

Hi, Can someone from Microsoft who manages the network for the Skype for Business please contact me to help resolve what I believe is a problem with the S4B network? I am experiencing PMTUD issues whereby connections with an IPv4 TCP MSS above 1492 and an IPv6 TCP MSS of above 1432 do not function. I can run a clean 1500 byte MTU on both IPv4 and IPv6 from the connection I am testing with. External validation (thus ruling out my own link) from https://wand.net.nz/pmtud/ reports that the following URLs used by Lync/S4B are failing PMTUD: meet.lync.com webdir0b.online.lync.com ---------- tbit from 2001:df0:4:4000::1:115 to 2603:1047:0:a::12 server-mss 1440, result: pmtud-fail app: http, url: https://meet.lync.com/ [ 0.010] TX SYN 64 seq = 0:0 [ 0.049] RX SYN/ACK 64 seq = 0:1 [ 0.049] TX 60 seq = 1:1 [ 0.049] TX 373 seq = 1:1(313) [ 0.097] RX 1500 seq = 1:314(1440) [ 0.097] RX 1500 seq = 1441:314(1440) [ 0.097] RX 868 seq = 2881:314(808) [ 0.097] TX PTB 1280 mtu = 1280 [ 0.097] TX 60 seq = 314:1 [ 0.399] RX 1500 seq = 1:314(1440) [ 0.399] TX PTB 1280 mtu = 1280 [ 0.994] RX 1500 seq = 1:314(1440) [ 0.994] TX PTB 1280 mtu = 1280 [ 2.197] RX 1500 seq = 1:314(1440) [ 2.197] TX PTB 1280 mtu = 1280 [ 4.603] RX 1500 seq = 1:314(1440) tbit from 130.217.250.115 to 52.113.65.78 server-mss 1460, result: pmtud-fail app: http, url: https://meet.lync.com/ [ 0.009] TX SYN 44 seq = 0:0 c5c9 [ 0.152] RX SYN/ACK 44 seq = 0:1 56ef [ 0.152] TX 40 seq = 1:1 c5ca [ 0.153] TX 353 seq = 1:1(313) c5cb DF [ 0.299] RX 808 seq = 2921:314(768) 56f7 DF [ 0.299] RX 1500 seq = 1:314(1460) 56f5 DF [ 0.299] RX 1500 seq = 1461:314(1460) 56f6 DF [ 0.299] TX 40 seq = 314:1 c5cc [ 0.299] TX PTB 56 mtu = 1280 [ 0.763] RX 1500 seq = 1:314(1460) 5720 DF [ 0.764] TX PTB 56 mtu = 1280 [ 1.592] RX 1500 seq = 1:314(1460) 5750 DF [ 1.592] TX PTB 56 mtu = 1280 [ 3.232] RX 1500 seq = 1:314(1460) 57dc DF [ 3.232] TX PTB 56 mtu = 1280 [ 6.514] RX 1500 seq = 1:314(1460) 5910 DF --------- This is in the Asia Pacific region. Thanks, Reuben Farrelly

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4or6.con question
by jimmy keffer 16 Mar '17

16 Mar '17

does anyone know what ports 4or6.com uses for udp traceroute its failing on my windows firewall i opened 33434-33464 udp but no help i goggled but can't find jimmy

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Multi-CDN Strategies
by Chris Grundemann 15 Mar '17

15 Mar '17

Hail NANOG; Is anyone here leveraging multiple CDN providers for resiliency and have best practices or other advice they'd be willing to share? Thanks, ~Chris -- @ChrisGrundemann http://chrisgrundemann.com

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