有時候某些網站會無法瀏覽(非特定網站,不定時),但其他大部分網站卻可以瀏覽.....不知是否有解決辦法....
中華電信烏龜 192.168.1.1
520GU WAN接到烏龜 192.168.1.55
電腦 接到520GU的Lan 192.168.1.111
好像是DNS問題...卻又好像不是...不知有其他偵錯的方式嗎??
Ex.
用奇摩購物時 tw.wrs.yahoo.com 電腦突然無法瀏覽(一時的,隔天就會好或是我直接撥接Bypass基地台NAT也會變正常)
1. 電腦 tracert tw.wrs.yahoo.com 不行
2. 電腦nslookup tw.wrs.yahoo.com 卻OK
3. 電腦tarcert nslookup反解的ip 竟然正常
4. 在520GU的系統上tracert或 ping tw.wrs.yahoo.com 也都正常....
那還能怎解析問題出在哪呢??
Ethernet adapter 區域連線:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8168C(P)/8111C(P) PCI-E G
igabit Ethernet NIC
Physical Address. . . . . . . . . : 00-1F-DD-51-C5-59
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.111
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.55
DHCP Server . . . . . . . . . . . : 192.168.1.55
DNS Servers . . . . . . . . . . . : 192.168.1.55
Lease Obtained. . . . . . . . . . : 2011年3月10日 上午 01:03:38
Lease Expires . . . . . . . . . . : 2011年3月11日 上午 01:03:38
C:\>tracert tw.wrs.yahoo.com
Unable to resolve target system name tw.wrs.yahoo.com.
C:\>nslookup
Default Server: unknown
Address: 192.168.1.55
> tw.wrs.yahoo.com
Server: unknown
Address: 192.168.1.55
Non-authoritative answer:
Name: rds1.search.vip.tw.g1.b.yahoo.com
Addresses: 116.214.4.25, 119.160.243.115
Aliases: tw.wrs.yahoo.com
C:\>tracert tw.wrs.yahoo.com
Unable to resolve target system name tw.wrs.yahoo.com.
C:\>tracert 116.214.4.25
Tracing route to rds1.search.vip.tp2.yahoo.com [116.214.4.25]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms unknown [192.168.1.55]
2 19 ms 19 ms 26 ms h254.s98.ts.hinet.net [168.95.98.254]
3 19 ms 19 ms 19 ms TCHN-3402.hinet.net [168.95.145.82]
4 19 ms 19 ms 19 ms TCHN-3112.hinet.net [220.128.17.142]
5 24 ms 24 ms 24 ms TYFO-3012.hinet.net [220.128.9.10]
6 48 ms 23 ms 23 ms TYFO-3301.hinet.net [220.128.9.249]
7 23 ms 24 ms 23 ms 211-22-39-61.HINET-IP.hinet.net [211.22.39.61]
8 25 ms 23 ms 24 ms te-8-1.bas-c2.tp2.yahoo.com [203.188.192.190]
9 23 ms 23 ms 37 ms rds1.search.vip.tp2.yahoo.com [116.214.4.25]
Trace complete.
C:\>tracert 119.160.243.115
Tracing route to rds1.search.vip.tw1.yahoo.com [119.160.243.115]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms unknown [192.168.1.55]
2 20 ms 23 ms 19 ms h254.s98.ts.hinet.net [168.95.98.254]
3 19 ms 19 ms 19 ms TCHN-3402.hinet.net [168.95.145.86]
4 19 ms 19 ms 18 ms TCHN-3112.hinet.net [220.128.17.142]
5 22 ms 22 ms 22 ms TPDT-3012.hinet.net [220.128.4.102]
6 22 ms 22 ms 21 ms TPDT-3301.hinet.net [220.128.4.149]
7 26 ms 22 ms 22 ms 211.22.41.45
8 23 ms 22 ms 22 ms 119.160.240.1
9 25 ms 23 ms 31 ms rds1.search.vip.tw1.yahoo.com [119.160.243.115]
Trace complete.
C:\>tracert tw.wrs.yahoo.com
Unable to resolve target system name tw.wrs.yahoo.com.
原本亂猜會不會是番茄Dnsmasq的問題,把它關掉好像也沒什影響!!!
另外有Dnsmasq的警告應該是OK嗎?
Mar 10 13:00:01 unknown syslog.info root: -- MARK --
Mar 10 13:05:39 unknown daemon.info dnsmasq-dhcp[24507]: DHCPREQUEST(br0) 192.168.1.111 00:1f:dd:51:c5:59
Mar 10 13:05:39 unknown daemon.info dnsmasq-dhcp[24507]: DHCPACK(br0) 192.168.1.111 00:1f:dd:51:c5:59 5k-be
Mar 10 13:06:00 unknown daemon.warn dnsmasq[24507]: nameserver 168.95.192.1 refused to do a recursive query
