建议is0 和enp0s25只留一个网卡接网络试试
Date: Thu, 19 May 2016 17:42:32 +0800
Subject: [tuna-general] 怪怪的IPV6问题
From: [email protected]
To: [email protected]
Tuna大神们，
我最近用IPV6无法上网之前Ok，我知道搞网络最讨厌这样的用户，别担心这邮件包括tcpdump和细节，我也自己调试了不少，求帮助。情况如下：
我的ping包(ICMP6 echo)被IPv6路由器转发到互联网，在日本的服务器收到我从清华机器发出的包并且回答ICMP6
reply，但是清华机器没收到ICMP reply。如果从日本服务器ping清华机器完全没接受到任何包。
ping www.google.com 或者facebook也不行。
在清华机器的tcpdump：17:23:57.589720 IP6 2402:f000:1:xx:xx:xx:xx:xx > 2001:x:x:xx::xx:
ICMP6, echo request, seq 140, length 6417:23:58.589711 IP6
2402:f000:1:x:xx:xxx:xx:xx > 2001:x:x:x::xx: ICMP6, echo request, seq 141,
length 64
在日本服务器tcpdump09:23:58.721637 IP6 2402:f000:xx > 2001:xxx: ICMP6, echo request,
seq 141, length 6409:23:58.721679 IP6 2001:xx > 2402:xx: ICMP6, echo reply, seq
141, length 64
清华机器路由表：2402:f000:x::/64 dev is0 proto kernel metric 256 expires 2591559sec
pref medium2402:f000:x::/64 dev enp0s25 proto ra metric 100 pref
medium2402:f000:x::/64 dev enp0s25 proto ra metric 100 pref mediumfe80::/64
dev is0 proto kernel metric 256 pref mediumfe80::/64 dev enp0s25 proto
kernel metric 256 pref mediumdefault via fe80::5efe:a66f:1501 dev is0 proto
ra metric 1024 expires 1360sec hoplimit 64 pref medium
从日本机器tracepath6到清华机器：sudo tracepath6 "2402:f000:xxx" 1?: [LOCALHOST]
0.018ms pmtu 1500 1: no reply 2: 2001:19f0:7000:8000::1
0.607ms 3: xe-0-3-0-9.r02.tokyjp03.jp.bb.gin.ntt.net
1.513ms 4: ae-10.r30.tokyjp05.jp.bb.gin.ntt.net
2.134ms 5: ae-1.r23.snjsca04.us.bb.gin.ntt.net 106.939ms 6:
ae-41.r02.snjsca04.us.bb.gin.ntt.net 107.934ms 7:
100gigabitethernet2-3.core1.sjc2.he.net 117.274ms 8:
10ge3-3.core1.pao1.he.net 117.713ms 9:
100ge8-1.core1.lax2.he.net 153.311ms 10:
cngi-bjix-as-ap-as23911.10gigabitethernet16-5.core1.lax2.he.net 119.320ms 11:
2001:252:0:302::1 269.221ms asymm 12 12: no
reply13: 2001:252:0:1::1 259.071ms asymm
14 14: 2001:da8:1:501::2 250.714ms 15:
cernet2.net 263.334ms 16: cernet2.net
262.997ms 17: 2402:f000:0:424::38
258.929ms 18: 2402:f000:0:288::138
256.928ms 19: no reply20: 2402:f000:0:3cc::205
257.592ms pmtu 148020: no reply21: no reply22: no reply23: no
reply24: no reply
从清华机器到日本机器tracepath都是no reply。不知道还能查什么。。
Thanks,Sam
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