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Hi,

I've recently experienced this issue with VSNL, an Indian ISP. I've an
internet connection from them, I recently noticed this:

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edmond@monte-cristo:~$ traceroute -I msdn.microsoft.com
traceroute to msdn.microsoft.akadns.net (65.55.11.235), 30 hops max,
52 byte packets
1 210.211.168.1.bb-static.vsnl.net.in (210.211.168.1) 26.749 ms
27.256 ms 27.091 ms
2 delhi-203.200.108-213.vsnl.net.in (203.200.108.213) 26.836 ms
27.022 ms 26.588 ms
3 59.163.16.138.static.vsnl.net.in (59.163.16.13 8) 294.918 ms
294.162 ms 295.428 ms
4 219.64.231.5.mpls-vpn-sj.static.vsnl.net.in (219.64.231.5)
299.259 ms 299.098 ms 298.917 ms
5 ge-6-3-0-46.pao-64cb-1b.ntwk.msn.net (207.46.46.67) 298.534 ms
299.173 ms 297.798 ms
6 ge-1-2-0-0.tuk-64cb-1b.ntwk.msn.net (207.46.33.222) 312.887 ms
313.286 ms 313.417 ms
7 ge-3-0-0-0.co1-64c-1b.ntwk.msn.net (207.46.34.41) 316.248 ms
317.286 ms 316.995 ms
8 ge-0-0-0-0.co1-64c-1a.ntwk.msn.net (207.46.34.189) 321.016 ms
320.803 ms 320.532 ms
9 10.22.8.62 (10.22.8.62) 321.021 ms 319.924 ms 319.659 ms
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
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I'm a n00b in routing, esp. never configured any EGRP protcol
implementation, so I wanted to know how is MSN being able to send a
packet from an RFC1918 address to VSNL's network. I expect packets
destined to RFC1918 address to be dropped at site-level (or
organization-level) routers, but this is border-level. And following is
the traceroute to the same from another Indian ISP (Airtel), which
relies on Sprint to reach MSN.

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abbe [~] chateau% sudo traceroute -I msdn.microsoft.com
Password:
traceroute to msdn.microsoft.akadns.net (65.55.11.235), 64 hops max, 72 byte packets
1 * * *
2 ABTS-NCR-Static-246.220.160.122.airtelbroadband.in (122.160.220.246) 33.458 ms 29.046 ms 30.290 ms
3 rasBTNLDel-static-174.215.56.202.mantraonline.com (202.56.215.174) 33.563 ms 31.811 ms 30.377 ms
4 125.19.22.145 (125.19.22.145) 29.517 ms 28.377 ms 30.774 ms
5 125.21.167.25 (125.21.167.25) 75.891 ms 75.737 ms 75.602 ms
6 sl-gw39-nyc-10-1.sprintlink.net (160.81.228.73) 294.580 ms 301.473 ms306.050 ms
7 sl-bb21-nyc-3-0-0.sprintlink.net (144.232.13.57) 297.558 ms 297.729 ms 299.510 ms
8 sl-bb22-nyc-14-0.sprintlink.net (144.232.7.102) 304.510 ms 314.244 ms305.923 ms
9 sl-bb21-chi-3-0-0.sprintlink.net (144.232.20.102) 332.567 ms 331.458 ms 331.284 ms
10 sl-bb25-chi-13-0.sprintlink.net (144.232.26.90) 328.455 ms 328.153 ms360.344 ms
11 sl-bb20-sea-1-0.sprintlink.net (144.232.20.85) 370.266 ms 367.872 ms 369.547 ms
12 sl-gw20-sea-0-0-0.sprintlink.net (144.232.6. 8) 375.711 ms 406.419 ms378.141 ms
13 sl-microsoft-23-0.sprintlink.net (144.224.113.146) 384.781 ms 383.371ms 387.322 ms
14 207.46.41.125 (207.46.41.125) 401.802 ms 402.980 ms 415.847 ms
15 ge-3-0-0-0.co1-64c-1b.ntwk.msn.net (207.46.34.41) 388.315 ms 549.512 ms *
16 ge-0-0-0-0.co1-64c-1a.ntwk.msn.net (207.46.34.189) 390.412 ms 416.519ms 386.261 ms
17 * * *
18 * * *
19 * * *
20 * * *
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Is such behavior expected from ISPs ?

TIA for enlightening me.
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Ashish Shukla आशीष शुक्ल http://wahjava.wordpress.com/
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