电信4g访问速度慢，掉包率高

wanghuidong 2017-06-20 03:17:58 UTC #1

江苏苏州电信4g网络，之前访问速度正常，最近1个月，速度很慢。
从进入应用到出现数据在16秒左右，切换到wifi后时间为5,6秒，之前速度与wifi速度基本一致，没有明显慢。

ping （pc用cmd ping命令，安卓用landroid中的ping命令）（api.leancloud.cn和api-ucloud.leancloud.cn）：
1、pc 端，ping 域名返回ipv4 地址，速度正常
2、电信4g， ping 域名解析为ipv6地址，时间500-700ms，掉包率从50%-70%左右，速度慢
3、电信4g， ping ipv4地址,速度正常
3、电信4g共享热点，pc连接后，ping域名返回ipv4 地址，速度正常。

电信4g landroid ping结果：

PING api-ucloud.leancloud.cn(2606:4980:9011:beaf:f::11) 56 data bytes
64 bytes from 2606:4980:9011:beaf:f::11: icmp_seq=2 ttl=43 time=504 ms
64 bytes from 2606:4980:9011:beaf:f::11: icmp_seq=5 ttl=43 time=543 ms
64 bytes from 2606:4980:9011:beaf:f::11: icmp_seq=7 ttl=43 time=504 ms
64 bytes from 2606:4980:9011:beaf:f::11: icmp_seq=10 ttl=43 time=502 ms
64 bytes from 2606:4980:9011:beaf:f::11: icmp_seq=12 ttl=43 time=493 ms

--- api-ucloud.leancloud.cn ping statistics ---
12 packets transmitted, 5 received, 58% packet loss, time 11027ms
rtt min/avg/max/mdev = 493.302/509.584/543.819/17.620 ms

电信4g landroid dns 结果：

; <<>> DiG 9.9.5-9+deb8u11-Debian <<>> any api-ucloud.leancloud.cn
;; global options: +cmd
;; Got answer:
;; ->>HEADER<;; flags: qr rd ra; QUERY: 1, ANSWER: 19, AUTHORITY: 2, ADDITIONAL: 15

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;api-ucloud.leancloud.cn. IN ANY

;; ANSWER SECTION:
api-ucloud.leancloud.cn. 299 IN AAAA 2606:4980:9011:beaf:f::9
api-ucloud.leancloud.cn. 299 IN AAAA 2606:4980:9011:beaf:f::11
api-ucloud.leancloud.cn. 299 IN AAAA 2606:4980:9011:beaf:f::17
api-ucloud.leancloud.cn. 299 IN AAAA 2606:4980:9011:beaf:f::10
api-ucloud.leancloud.cn. 299 IN AAAA 2606:4980:9011:beaf:f::14
api-ucloud.leancloud.cn. 299 IN AAAA 2606:4980:9011:beaf:f::15
api-ucloud.leancloud.cn. 299 IN AAAA 2606:4980:9011:beaf:f::16
api-ucloud.leancloud.cn. 299 IN AAAA 2606:4980:9011:beaf:f::12
api-ucloud.leancloud.cn. 299 IN AAAA 2606:4980:9011:beaf:f::13
api-ucloud.leancloud.cn. 9 IN A 106.75.66.151
api-ucloud.leancloud.cn. 9 IN A 123.59.41.31
api-ucloud.leancloud.cn. 9 IN A 106.75.95.141
api-ucloud.leancloud.cn. 9 IN A 106.75.87.92
api-ucloud.leancloud.cn. 9 IN A 106.75.95.144
api-ucloud.leancloud.cn. 9 IN A 106.75.95.143
api-ucloud.leancloud.cn. 9 IN A 106.75.87.91
api-ucloud.leancloud.cn. 9 IN A 106.75.95.142
api-ucloud.leancloud.cn. 9 IN A 120.132.49.239
api-ucloud.leancloud.cn. 9 IN A 106.75.95.138

;; AUTHORITY SECTION:
leancloud.cn. 82975 IN NS ns3.dnsv3.com.
leancloud.cn. 82975 IN NS ns4.dnsv3.com.

;; ADDITIONAL SECTION:
ns3.dnsv3.com. 160246 IN A 115.236.151.177
ns3.dnsv3.com. 160246 IN A 180.153.10.166
ns3.dnsv3.com. 160246 IN A 182.140.167.168
ns3.dnsv3.com. 160246 IN A 220.249.242.12
ns3.dnsv3.com. 160246 IN A 14.215.150.12
ns3.dnsv3.com. 160246 IN A 52.221.20.79
ns3.dnsv3.com. 160246 IN A 111.30.136.110
ns4.dnsv3.com. 160246 IN A 180.153.10.168
ns4.dnsv3.com. 160246 IN A 180.163.19.16
ns4.dnsv3.com. 160246 IN A 183.60.57.178
ns4.dnsv3.com. 160246 IN A 52.221.20.79
ns4.dnsv3.com. 160246 IN A 101.226.220.15
ns4.dnsv3.com. 160246 IN A 111.30.136.110
ns4.dnsv3.com. 160246 IN A 125.39.213.167

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue Jun 20 06:10:37 EEST 2017
;; MSG SIZE rcvd: 733

aveline 2017-06-20 03:38:11 UTC #2

抱歉，这里解析出来的 IPv6 地址是我们海外出口的地址。
国内访问会比较慢的。

能否提供一下您的 IPv6 地址？
我们确认一下是不是 DNSPod 的地址库有错误。

wanghuidong 2017-06-20 05:53:32 UTC #3

local net

Interfaces:
rmnet1
rmnet2
rmnet3
rmnet4
rmnet5
rmnet6
rmnet_ims
rmnet_vowifi
rmnet_ims1
sit0
wlan0
lo
IPv4: 127.0.0.1
IPv6: ::1
rmnet0
IPv4: 10.129.196.37
IPv6: 240e:e8:f104:ae16:f818:6361:b764:73f5
IPv6: fe80::5a02:3ff:fe04:506

Ipv4 Routes:

IPv6 Routes:
2000::/128 via 240e:e8:f104:ae16:f818:6361:b764:73f1 dev rmnet0
200:2:3b18:3ad::/128 via 240e:e8:f104:ae16:f818:6361:b764:73f1 dev rmnet0
240e:5a::6666/128 via 240e:e8:f104:ae16:f818:6361:b764:73f1 dev rmnet0
240e:5b::6666/128 via 240e:e8:f104:ae16:f818:6361:b764:73f1 dev rmnet0
240e:e8:f104:ae16::/64 dev rmnet0
240e:e8:f104:ae16:f818:6361:b764:73f5/128 dev lo
::1/128 dev lo
default dev lo
default dev rmnet_ims
default via 240e:e8:f104:ae16:f818:6361:b764:73f1 dev rmnet0
fe80::/64 dev rmnet0
fe80::5a02:3ff:fe04:506/128 dev lo
ff00::/8 dev rmnet0

wanghuidong 2017-06-20 05:55:46 UTC #4

publicip

IPv4:
IP: 180.98.13.136
PTR: 136.13.98.180.in-addr.arpa.
Country: CN
Network: 180.96.0.0/11
ISP: CHINANET-BACKBONE No.31,Jin-rong Street, CN
ASN: 4134
RIR: apnic
Modified: 2009-07-23
IPv6:
IP: 240e:e8:f104:ae16:f818:6361:b764:73f5
PTR: 5.f.3.7.4.6.7.b.1.6.3.6.8.1.8.f.6.1.e.a.4.0.1.f.8.e.0.0.e.0.4.2.ip6.arpa.
Country: CN
Network: 240e::/24
ISP: CHINANET-BACKBONE No.31,Jin-rong Street, CN
ASN: 4134
RIR: apnic
Modified: 2010-05-20

aveline 2017-06-20 06:12:00 UTC #5

麻烦再访问一下 http://ip.dnspod.cn/ ，检测完成后将截图贴一下。

wanghuidong 2017-06-20 06:36:07 UTC #6

PING ip.dnspod.cn (59.37.116.101) 56(84) bytes of data.
64 bytes from 59.37.116.101: icmp_seq=1 ttl=50 time=80.5 ms
64 bytes from 59.37.116.101: icmp_seq=2 ttl=50 time=43.9 ms
64 bytes from 59.37.116.101: icmp_seq=3 ttl=50 time=41.1 ms
64 bytes from 59.37.116.101: icmp_seq=4 ttl=50 time=41.0 ms
64 bytes from 59.37.116.101: icmp_seq=5 ttl=50 time=43.2 ms

--- ip.dnspod.cn ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 41.087/49.982/80.507/15.303 ms

aveline 2017-06-20 06:39:40 UTC #7

是打开这个页面，然后点击 开始检测，检测完成后把检测结果截图发在这里。

wanghuidong 2017-06-20 06:41:32 UTC #8

本机DNS设置正确
您本机使用的已是最合适的DNS
本地IP地址106.39.189.202电信中国北京北京
检测项
检测项目:3错误项目:0
服务器地址
106.39.189.3
电信中国北京北京
106.39.191.7
电信中国北京北京
106.39.190.5
电信中国北京北京

wanghuidong 2017-06-20 06:44:49 UTC #9

aveline 2017-06-20 06:47:14 UTC #10

已经联系 DNSPod，还需要等他们处理。

wanghuidong 2017-06-20 06:48:20 UTC #11

好，谢谢。如恢复，麻烦回下贴。

aveline 2017-06-21 07:25:37 UTC #12

Hi， DNSPod 回复解析结果正常。
能否再提供一下您的 DNS 信息？

还是在之前那个应用里，DNS api.leancloud.cn 记录类型选 AAAA，然后截图。

wanghuidong 2017-06-21 14:49:55 UTC #13

目前速度恢复了。

; <<>> DiG 9.9.5-9+deb8u11-Debian <<>> any api-ucloud.leancloud.cn
;; global options: +cmd
;; Got answer:
;; ->>HEADER<;; flags: qr rd ra; QUERY: 1, ANSWER: 19, AUTHORITY: 2, ADDITIONAL: 15

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;api-ucloud.leancloud.cn. IN ANY

;; ANSWER SECTION:
api-ucloud.leancloud.cn. 50 IN AAAA 2606:4980:9011:beaf:f::12
api-ucloud.leancloud.cn. 50 IN AAAA 2606:4980:9011:beaf:f::10
api-ucloud.leancloud.cn. 50 IN AAAA 2606:4980:9011:beaf:f::17
api-ucloud.leancloud.cn. 50 IN AAAA 2606:4980:9011:beaf:f::13
api-ucloud.leancloud.cn. 50 IN AAAA 2606:4980:9011:beaf:f::15
api-ucloud.leancloud.cn. 50 IN AAAA 2606:4980:9011:beaf:f::16
api-ucloud.leancloud.cn. 50 IN AAAA 2606:4980:9011:beaf:f::9
api-ucloud.leancloud.cn. 50 IN AAAA 2606:4980:9011:beaf:f::11
api-ucloud.leancloud.cn. 50 IN AAAA 2606:4980:9011:beaf:f::14
api-ucloud.leancloud.cn. 10 IN A 106.75.87.92
api-ucloud.leancloud.cn. 10 IN A 106.75.95.143
api-ucloud.leancloud.cn. 10 IN A 106.75.95.144
api-ucloud.leancloud.cn. 10 IN A 106.75.95.141
api-ucloud.leancloud.cn. 10 IN A 106.75.87.91
api-ucloud.leancloud.cn. 10 IN A 106.75.95.138
api-ucloud.leancloud.cn. 10 IN A 106.75.66.151
api-ucloud.leancloud.cn. 10 IN A 106.75.95.142
api-ucloud.leancloud.cn. 10 IN A 123.59.41.31
api-ucloud.leancloud.cn. 10 IN A 120.132.49.239

;; AUTHORITY SECTION:
leancloud.cn. 86149 IN NS ns4.dnsv3.com.
leancloud.cn. 86149 IN NS ns3.dnsv3.com.

;; ADDITIONAL SECTION:
ns3.dnsv3.com. 31784 IN A 182.140.167.168
ns3.dnsv3.com. 31784 IN A 220.249.242.12
ns3.dnsv3.com. 31784 IN A 14.215.150.12
ns3.dnsv3.com. 31784 IN A 52.221.20.79
ns3.dnsv3.com. 31784 IN A 111.30.136.110
ns3.dnsv3.com. 31784 IN A 115.236.151.177
ns3.dnsv3.com. 31784 IN A 180.153.10.166
ns4.dnsv3.com. 31784 IN A 183.60.57.178
ns4.dnsv3.com. 31784 IN A 52.221.20.79
ns4.dnsv3.com. 31784 IN A 101.226.220.15
ns4.dnsv3.com. 31784 IN A 111.30.136.110
ns4.dnsv3.com. 31784 IN A 125.39.213.167
ns4.dnsv3.com. 31784 IN A 180.153.10.168
ns4.dnsv3.com. 31784 IN A 180.163.19.16

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jun 21 17:51:39 EEST 2017
;; MSG SIZE rcvd: 733

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