我在腾讯云的硅谷节点买了一台 VPS 。这两天频频出现域名无法解析和访问超时的问题：
1. 访问：
https://cmake.org/files/v3.28/cmake-3.28.3.tar.gz 出现故障：Resolving
cmake.org (
cmake.org)... failed: Temporary failure in name resolution.
在持续 25 个小时后自动恢复正常。
2. 访问：
https://gmplib.org/download/gmp/gmp-6.3.0.tar.xz出现 time out : Resolving
gmplib.org (
gmplib.org)... 130.242.124.102
Connecting to
gmplib.org (
gmplib.org)|130.242.124.102|:443... failed: Connection timed out.
Retrying.
我 trace 这个
gmplib.org 服务器，没看出什么问题：
traceroute to
gmplib.org (130.242.124.102), 30 hops max, 60 byte packets
1 * * *
2 11.81.120.210 (11.81.120.210) 0.940 ms * *
3 10.162.71.229 (10.162.71.229) 6.670 ms 10.162.72.13 (10.162.72.13) 6.451 ms 10.162.71.189 (10.162.71.189) 9.220 ms
4 10.196.2.189 (10.196.2.189) 1.565 ms 30.245.21.249 (30.245.21.249) 1.701 ms 30.245.21.9 (30.245.21.9) 1.755 ms
5 10.162.5.85 (10.162.5.85) 1.216 ms 1.590 ms 10.162.9.76 (10.162.9.76) 4.433 ms
6 *
sjo-b23-link.ip.twelve99.net (213.248.81.42) 1.824 ms 1.721 ms
7 *
sjo-bb1-link.ip.twelve99.net (62.115.139.16) 5.821 ms *
8 * *
den-bb1-link.ip.twelve99.net (62.115.139.105) 27.472 ms
9
den-bb2-link.ip.twelve99.net (62.115.139.113) 27.516 ms * *
10 * *
nyk-bb5-link.ip.twelve99.net (62.115.139.32) 67.160 ms
11
chi-bb2-link.ip.twelve99.net (62.115.136.102) 71.549 ms *
kanc-bb2-link.ip.twelve99.net (62.115.140.184) 69.923 ms
12 * *
ash-b2-link.ip.twelve99.net (62.115.123.123) 71.381 ms
13
ash-b2-link.ip.twelve99.net (62.115.123.123) 71.626 ms
nordunet-ic-309102.ip.twelve99-cust.net (213.248.85.174) 71.571 ms
rest-bb1-link.ip.twelve99.net (62.115.139.35) 71.802 ms
14
ash-b2-link.ip.twelve99.net (62.115.141.50) 107.979 ms
us-man.nordu.net (109.105.97.142) 76.895 ms
ash-b2-link.ip.twelve99.net (62.115.123.125) 106.080 ms
15
us-man.nordu.net (109.105.97.142) 75.258 ms
ash-b2-link.ip.twelve99.net (62.115.123.125) 69.727 ms
nl-ams.nordu.net (109.105.97.65) 157.496 ms
16
dk-esbj.nordu.net (109.105.97.74) 157.380 ms
nordunet-ic-309102.ip.twelve99-cust.net (213.248.85.174) 69.804 ms
nl-ams.nordu.net (109.105.97.65) 155.451 ms
17
dk-bal2.nordu.net (109.105.97.2) 156.821 ms
us-man.nordu.net (109.105.97.142) 75.580 ms
nl-ams.nordu.net (109.105.97.65) 158.155 ms
18
dk-bal2.nordu.net (109.105.97.2) 154.932 ms
lnd88-r11.sunet.se (109.105.102.67) 158.167 ms 158.267 ms
19
dk-bal2.nordu.net (109.105.97.2) 157.360 ms
lnd88-r11.sunet.se (109.105.102.67) 158.603 ms
dk-esbj.nordu.net (109.105.97.74) 155.448 ms
20
dk-bal2.nordu.net (109.105.97.2) 155.599 ms
jonkoping-jkg-r11.sunet.se (86.104.202.54) 161.919 ms
vaxjo-vxj-r11.sunet.se (86.104.202.109) 160.836 ms
21
vaxjo-vxj-r11.sunet.se (86.104.202.109) 159.279 ms
lnd88-r11.sunet.se (109.105.102.67) 156.898 ms
jonkoping-jkg-r11.sunet.se (86.104.202.54) 159.882 ms
22
skovde-ske109-r11.sunet.se (86.104.202.53) 163.614 ms
jonkoping-jkg-r11.sunet.se (86.104.202.54) 160.226 ms
orebro-lba-r11.sunet.se (86.104.202.122) 165.418 ms
23
orebro-lba-r11.sunet.se (86.104.202.122) 165.849 ms 164.227 ms
skovde-ske109-r11.sunet.se (86.104.202.53) 164.049 ms
24
stockholm-tug-r11.sunet.se (86.104.202.134) 165.778 ms
skovde-ske109-r11.sunet.se (86.104.202.53) 163.970 ms
orebro-lba-r11.sunet.se (86.104.202.122) 166.239 ms
25
stockholm-tug-r11.sunet.se (86.104.202.134) 163.827 ms
orebro-lba-r11.sunet.se (86.104.202.122) 163.915 ms
stockholm-tug-r11.sunet.se (86.104.202.134) 163.539 ms
26
stockholm-tug-r12.sunet.se (86.104.202.141) 163.355 ms 165.910 ms
stockholm-tug-r2.sunet.se (86.104.203.76) 169.215 ms
27
stockholm-tug-r2.sunet.se (86.104.203.76) 169.277 ms 169.223 ms 163.429 ms
28
stockholm-tug-r12.sunet.se (86.104.202.141) 163.781 ms 163.868 ms
martin.gmplib.org (130.242.124.102) 164.000 ms
腾讯云的运维说这是对端的问题。
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