Weird Routing Problem
Following are two traceroutes: one to dns.hacom.net (216.4.181.20)
and one to dns2.hacom.net (216.4.181.21). The route to 216.4.181.21
was successful, while the route to 216.4.181.20 is stuck somewhere
in sprintlink.net.
It only happens with the Linux server masquerading fr my home network.
If I connect my laptop directly, it will works. I thought that the
ip assigned to the linux server may cause the problem. So I switch
the NIC and get a different DHCP server, same problem! Adelphia
telneted to the gateway, 24.51.212.1 and has no problem. It looks
like to be Linux specific, but how? The routing table is correctly
advertised.
traceroute to dns.hacom.net (216.4.181.20), 30 hops max, 38 byte packets
1 10.65.84.1 (10.65.84.1) 9.242 ms 12.374 ms 15.426 ms
2 fl-sdad3c4a-65.dad.adelphia.net (24.49.23.65) 17.746 ms 15.039 ms
17.183 ms
3 64.8.31.125 (64.8.31.125) 47.964 ms 40.561 ms 47.359 ms
4 fe1-0-0.spr-ftw-pos-1.adelphia.net (64.8.29.162) 138.661 ms 41.070
ms 47.944 ms
5 sl-gw20-fw-2-3.sprintlink.net (144.232.194.41) 48.364 ms 45.351 ms
47.090 ms
6 sl-bb20-fw-5-0.sprintlink.net (144.232.11.125) 50.856 ms 42.535 ms
47.820 ms
7 sl-bb22-pen-11-0.sprintlink.net (144.232.18.78) 79.054 ms 84.199 ms
84.236 ms
8 sl-bb22-nyc-13-0.sprintlink.net (144.232.9.69) 66.721 ms 60.890 ms
68.291 ms
9 sl-bb23-nyc-8-0.sprintlink.net (144.232.7.14) 70.396 ms 62.796 ms
69.972 ms
10 sl-bb23-nyc-15-0.sprintlink.net (144.232.9.18) 94.287 ms 74.343 ms
80.321 ms
11 sl-bb22-nyc-13-0.sprintlink.net (144.232.9.69) 65.144 ms 64.289 ms
64.685 ms
12 sl-bb23-nyc-8-0.sprintlink.net (144.232.7.14) 69.932 ms 63.067 ms
70.315 ms
13 sl-bb23-nyc-15-0.sprintlink.net (144.232.9.18) 82.727 ms 84.770 ms
83.015 ms
14 sl-bb22-nyc-13-0.sprintlink.net (144.232.9.69) 72.744 ms 65.579 ms
71.351 ms
15 sl-bb23-nyc-8-0.sprintlink.net (144.232.7.14) 73.286 ms 106.366 ms
72.940 ms
16 sl-bb23-nyc-15-0.sprintlink.net (144.232.9.18) 87.285 ms 78.769 ms
83.868 ms
17 sl-bb22-nyc-13-0.sprintlink.net (144.232.9.69) 72.974 ms 72.780 ms
75.784 ms
18 sl-bb23-nyc-8-0.sprintlink.net (144.232.7.14) 142.833 ms 67.493 ms
76.881 ms
19 sl-bb23-nyc-15-0.sprintlink.net (144.232.9.18) 92.978 ms 79.134 ms
88.024 ms
20 sl-bb22-nyc-13-0.sprintlink.net (144.232.9.69) 77.929 ms 67.750 ms
80.347 ms
21 sl-bb23-nyc-8-0.sprintlink.net (144.232.7.14) 75.580 ms 70.055 ms
75.355 ms
22 sl-bb23-nyc-15-0.sprintlink.net (144.232.9.18) 88.074 ms 82.412 ms
86.245 ms
23 sl-bb22-nyc-13-0.sprintlink.net (144.232.9.69) 75.969 ms 70.199 ms
75.380 ms
24 sl-bb23-nyc-8-0.sprintlink.net (144.232.7.14) 77.286 ms 69.914 ms
78.279 ms
25 sl-bb23-nyc-15-0.sprintlink.net (144.232.9.18) 113.669 ms 84.071 ms
92.714 ms
26 sl-bb22-nyc-13-0.sprintlink.net (144.232.9.69) 81.886 ms 73.403 ms
94.604 ms
27 sl-bb23-nyc-8-0.sprintlink.net (144.232.7.14) 79.440 ms 72.782 ms
80.059 ms
28 sl-bb23-nyc-15-0.sprintlink.net (144.232.9.18) 92.001 ms 85.526 ms
90.673 ms
29 sl-bb22-nyc-13-0.sprintlink.net (144.232.9.69) 80.571 ms 78.739 ms
83.074 ms
30 sl-bb23-nyc-8-0.sprintlink.net (144.232.7.14) 85.666 ms 95.761 ms
81.219 ms
traceroute to dns2.hacom.net (216.4.181.21), 30 hops max, 38 byte packets
1 10.65.84.1 (10.65.84.1) 8.352 ms 9.037 ms 14.034 ms
2 fl-sdad3c4a-65.dad.adelphia.net (24.49.23.65) 16.064 ms 9.252 ms
15.32 ms
3 64.8.31.125 (64.8.31.125) 47.530 ms 41.461 ms 57.251 ms
4 fe4-0-0.spr-ftw-pos-1.adelphia.net (64.8.29.130) 57.111 ms 41.179 ms
48.646 ms
5 sl-gw20-fw-2-3.sprintlink.net (144.232.194.41) 48.585 ms 40.425 ms
50.109 ms
6 sl-bb20-fw-5-0.sprintlink.net (144.232.11.125) 47.303 ms 41.881 ms
51.956 ms
7 sl-bb22-pen-11-0.sprintlink.net (144.232.18.78) 80.222 ms 73.359 ms
78.647 ms
8 144.232.16.194 (144.232.16.194) 80.862 ms 74.914 ms 78.974 ms
9 144.232.16.193 (144.232.16.193) 86.664 ms 76.198 ms 76.309 ms
10 sl-nap1-pen-4-0-0.sprintlink.net (144.232.5.62) 79.927 ms 73.876 ms
81.323 ms
11 sprint-nap.digex.net (192.157.69.42) 92.660 ms 74.433 ms 81.052 ms
12 * phl2-core2-fa0-1-0.atlas.icix.net (165.117.51.37) 100.002 ms
95.591 ms
13 dca1-core12-s3-3.atlas.icix.net (165.117.52.121) 117.245 ms 96.022
ms *
14 dca1-core11-pos6-0.atlas.icix.net (165.117.48.201) 108.774 ms
104.818 ms
103.362 ms
15 dca6-core4-pos4-0.atlas.icix.net (165.117.52.238) 113.238 ms 103.334
ms
104.544 ms
16 dca6-core5-pos7-0.atlas.icix.net (165.117.48.118) 106.441 ms 102.469
ms 105.221 ms
17 atl1-core3-pos5-0.atlas.icix.net (165.117.48.61) 116.753 ms 113.261
ms 124.491 ms
18 atl1-core4-pos7-0.atlas.icix.net (165.117.48.150) 119.984 ms *
115.053 ms
19 atl1-core2-pos7-0.atlas.icix.net (165.117.48.142) 123.074 ms 123.056
ms 120.070 ms
20 216.2.64.18 (216.2.64.18) 127.020 ms 111.124 ms 122.323 ms
21 10.10.1.2 (10.10.1.2) 128.179 ms 123.011 ms 129.730 ms
22 dns2 (216.4.181.21) 136.490 ms 111.818 ms 116.210 ms
Appreciate any comments/suggestions.
Bao
--
Bao C. Ha, President voice: (678) 467-9415
Hacom, Internet & Web Services http://www.hacom.net
Linux/Unix Consulting/Training http://www.masteringlinux.com
Primary Perpetrator of "Slackware Linux Unleashed"
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