Fórum Ubuntu CZ/SK
Ubuntu pro osobní počítače => Internet a sítě => Téma založeno: oraf 02 Února 2014, 21:38:22
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Zdravim , mel jsem pocit ze tento topic tu uz byl , ale nenasel jsem ho,
nema nekdo tuseni v cem muz ebyt zakopany pes?
ze se mi Ubuntu 12.04 nepripoji k internetu? bez problemu to fungovalo vypl jsem pocitac , po zapnuti sem se pripojil k jine wifi a od te doby nic, ani prez kabel to nefunguje , pingnu vzdy jen na branu, ale na sousedni pocitace ve stejne siti uz ne, a ani na nejaky internetovy adresy tam tez nelze navazat spojeni.
delalo mi to uz v minulosti , ale vzdy se to zahadne samo spravilo ale ted to nejak nekomunikuje,
pod Windows to jde takze to enbude HW problem .
nema nekdo napady?
jak postupovat
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Chtělo by to trochu více informací:
ip -s link
ip a
ip r
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tady jsou ty vypisy
ondra@ondra-Ideapad-Z570:~$ ip -s link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
RX: bytes packets errors dropped overrun mcast
1028 16 0 0 0 0
TX: bytes packets errors dropped carrier collsns
1028 16 0 0 0 0
2: eth2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether f0:de:f1:5f:c9:b8 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 0 0 0
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 74:e5:0b:1c:69:f4 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
38782 312 0 0 0 0
TX: bytes packets errors dropped carrier collsns
16220 76 0 0 0 0
ondra@ondra-Ideapad-Z570:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether f0:de:f1:5f:c9:b8 brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 74:e5:0b:1c:69:f4 brd ff:ff:ff:ff:ff:ff
inet 10.4.103.199/16 brd 10.4.255.255 scope global wlan0
inet6 2001:718:7:204:603d:7608:6e84:8942/64 scope global temporary dynamic
valid_lft 604792sec preferred_lft 85792sec
inet6 2001:718:7:204:76e5:bff:fe1c:69f4/64 scope global dynamic
valid_lft 2591995sec preferred_lft 604795sec
inet6 fe80::76e5:bff:fe1c:69f4/64 scope link
valid_lft forever preferred_lft forever
ondra@ondra-Ideapad-Z570:~$ ip r
default via 10.4.0.1 dev wlan0 proto static
10.4.0.0/16 dev wlan0 proto kernel scope link src 10.4.103.199 metric 2
169.254.0.0/16 dev wlan0 scope link metric 1000
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Ok, tak tracepath někam ven ...
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to nedopadlo moc dobre :D zkousel jsem google
moc daleko jsem se nedostal
ondra@ondra-Ideapad-Z570:~$ tracepath 216.239.51.99
1: ondra-Ideapad-Z570.local 0.241ms pmtu 1500
1: no reply
2: no reply
3: no reply
4: no reply
5: no reply
6: no reply
7: no reply
8: no reply
9: no reply
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Jop, ani na bránu ...
ping na GW v tu dobu jede? tj. na 10.4.0.1?
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ne ping bez reakce, i kdyz na domaci siti se mi podarilo pingnout aspon na branu .
ted jsem ve skole a tam to teda ani nepingne
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jinak zkousel jsem pripojeni doma, a tam jde ping na branu, a dokonce i trace neco vykazuje, ale stejne do cile nedorazi
ondra@ondra-Ideapad-Z570:~$ ping 10.0.0.138
PING 10.0.0.138 (10.0.0.138) 56(84) bytes of data.
64 bytes from 10.0.0.138: icmp_req=1 ttl=64 time=5.99 ms
64 bytes from 10.0.0.138: icmp_req=2 ttl=64 time=4.80 ms
64 bytes from 10.0.0.138: icmp_req=3 ttl=64 time=12.7 ms
^C
--- 10.0.0.138 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.801/7.850/12.759/3.506 ms
ondra@ondra-Ideapad-Z570:~$ ip -s link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
RX: bytes packets errors dropped overrun mcast
2349 28 0 0 0 0
TX: bytes packets errors dropped carrier collsns
2349 28 0 0 0 0
2: eth2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether f0:de:f1:5f:c9:b8 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 0 0 0
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 74:e5:0b:1c:69:f4 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
21340 184 0 0 0 0
TX: bytes packets errors dropped carrier collsns
21128 147 0 0 0 0
ondra@ondra-Ideapad-Z570:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether f0:de:f1:5f:c9:b8 brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 74:e5:0b:1c:69:f4 brd ff:ff:ff:ff:ff:ff
inet 10.0.0.62/24 brd 10.0.0.255 scope global wlan0
inet6 fe80::76e5:bff:fe1c:69f4/64 scope link
valid_lft forever preferred_lft forever
ondra@ondra-Ideapad-Z570:~$ ip r
default via 10.0.0.138 dev wlan0 proto static
10.0.0.0/24 dev wlan0 proto kernel scope link src 10.0.0.62 metric 2
169.254.0.0/16 dev wlan0 scope link metric 1000
ondra@ondra-Ideapad-Z570:~$ tracepath 72.14.207.99
1: ondra-Ideapad-Z570.local 0.166ms pmtu 1500
1: 10.0.0.138 2.133ms
1: 10.0.0.138 10.669ms
2: 78.80.116.134 6.474ms pmtu 1492
2: 62.141.11.99 48.272ms
3: 62.141.13.22 41.425ms
4: 62.141.11.226 37.987ms
5: no reply
6: no reply
7: no reply
^C
ondra@ondra-Ideapad-Z570:~$ ping ^C
ondra@ondra-Ideapad-Z570:~$ ping 72.14.207.99
PING 72.14.207.99 (72.14.207.99) 56(84) bytes of data.
^C
--- 72.14.207.99 ping statistics ---
63 packets transmitted, 0 received, 100% packet loss, time 62488ms
ondra@ondra-Ideapad-Z570:~$
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Tak zrovna na tu IP (72.14.207.99) mi ten ping taky nejede a končí mi to někde někde, takže bych vybral něco jiného :)
Zkusme třeba 212.20.96.25 :D
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pokus 2 , ping vysel
PING 212.20.96.25 (212.20.96.25) 56(84) bytes of data.
64 bytes from 212.20.96.25: icmp_req=1 ttl=57 time=12.4 ms
64 bytes from 212.20.96.25: icmp_req=2 ttl=57 time=10.6 ms
64 bytes from 212.20.96.25: icmp_req=3 ttl=57 time=15.0 ms
64 bytes from 212.20.96.25: icmp_req=4 ttl=57 time=17.8 ms
64 bytes from 212.20.96.25: icmp_req=5 ttl=57 time=15.8 ms
^C
--- 212.20.96.25 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 10.615/14.345/17.837/2.546 ms
ondra@ondra-Ideapad-Z570:~$ tracepath 212.20.96.25
1: ondra-Ideapad-Z570.local 0.069ms pmtu 1500
1: 10.0.0.138 4.224ms
1: 10.0.0.138 2.761ms
2: 78.80.116.134 5.273ms pmtu 1492
2: 62.141.11.99 39.628ms
3: 62.141.13.22 45.175ms
4: 62.141.11.218 45.533ms
5: 91.210.16.9 49.062ms
6: no reply
7: 82.119.252.142 46.798ms asymm 6
8: no reply
9: no reply
10: no reply
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Nu, to vypadá funkčně? :)
ping www.vol.cz
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rikal jsem si mozna divne DNS, zkousel jsem i DNS nastavit na pevno 8.8.8.8 ale tez bez uspechu
ondra@ondra-Ideapad-Z570:~$ ping www.vol.cz
ping: unknown host www.vol.cz
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Nu ale podle tohoto to skutečně vypadá na chybu DNS ...
dig -t A www.vol.cz
dig -t A www.vol.cz @10.0.0.138
dig -t A www.vol.cz @8.8.8.8
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tady jsou vysledky :
ondra@ondra-Ideapad-Z570:~$ dig -t A www.vol.cz
; <<>> DiG 9.8.1-P1 <<>> -t A www.vol.cz
;; global options: +cmd
;; connection timed out; no servers could be reached
ondra@ondra-Ideapad-Z570:~$ dig -t A www.vol.cz @10.0.0.138
; <<>> DiG 9.8.1-P1 <<>> -t A www.vol.cz @10.0.0.138
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28314
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;www.vol.cz. IN A
;; ANSWER SECTION:
www.vol.cz. 3600 IN A 212.20.96.25
;; Query time: 17 msec
;; SERVER: 10.0.0.138#53(10.0.0.138)
;; WHEN: Tue Feb 4 00:16:43 2014
;; MSG SIZE rcvd: 44
ondra@ondra-Ideapad-Z570:~$ dig -t A www.vol.cz @8.8.8.8
; <<>> DiG 9.8.1-P1 <<>> -t A www.vol.cz @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32516
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;www.vol.cz. IN A
;; ANSWER SECTION:
www.vol.cz. 2055 IN A 212.20.96.25
;; Query time: 18 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Tue Feb 4 00:16:54 2014
;; MSG SIZE rcvd: 44
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cat /etc/resolv.conf
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cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 10.0.2.1
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No jo, ale tenhle server opravdu v síti nemáš :)
To ti přiděluje DHCP? Nebo jsi to nastavoval natvrdo?
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mam nastavene DHCP
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ale tato IP byla brana v siti kde to naposledy fungovalo ;-)
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To je možné, ale tato IP leží mimo rozsah (10.0.0.0/24), ve kterém aktuálně jsi a předpokládám také, že ani není nikde za bránou 10.0.0.138
Mrkni do nastavení NM, zda jsi tam manuálně nenaklikal DNS ...
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ne vse je automaticky DHCP, i kdyz to tam vse vyplnim rucne tak ten nameserver je stale stejny
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Pak je špatně nakonfigurovaný DHCP server.
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jako na routeru? tam prideluje pro vsechny ostatni pocitace v poradku
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tak jsem prepsal ten soubor resolv.conf a uz to funguje ale nejspise to nebdue fungovat nikde jinde,
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Nemohl by to byt problem Network Manageru nestacilo by to reinstalnout?
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Bude tam to, co jsi přepsal i po restartu?
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Reinstal nezabira. nejake dalsi napady?
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Natvrdo tam dej nameservery 8.8.8.8 a 8.8.4.4
Je to trochu divočina, ale hádám budeš mít rozhašeného dhclienta ...
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do toho souboru , a cim je mam oddelit?
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jasny takhel to funguje , a da se nejak vhodne opravit Dhclient?
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Mrkni co máš v /etc/dhcp/dhclient.conf
V sekci request by to mělo vypadat nějak takto:
request subnet-mask, broadcast-address, time-offset, routers,
domain-name, domain-name-servers, domain-search, host-name,
dhcp6.name-servers, dhcp6.domain-search,
netbios-name-servers, netbios-scope, interface-mtu,
rfc3442-classless-static-routes, ntp-servers,
dhcp6.fqdn, dhcp6.sntp-servers;
Ještě postni
nm-tool
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sekce request vypada takto :
request subnet-mask, broadcast-address, time-offset, routers,
domain-name, domain-name-servers, domain-search, host-name,
netbios-name-servers, netbios-scope, interface-mtu,
rfc3442-classless-static-routes, ntp-servers,
dhcp6.domain-search, dhcp6.fqdn,
dhcp6.name-servers, dhcp6.sntp-servers;
a nm-tool
ondra@ondra-Ideapad-Z570:~$ nm-tool
NetworkManager Tool
State: connected (global)
- Device: eth2 -----------------------------------------------------------------
Type: Wired
Driver: r8169
State: unavailable
Default: no
HW Address: F0:DE:F1:5F:C9:B8
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: off
- Device: wlan0 [pokusna] -----------------------------------------------------
Type: 802.11 WiFi
Driver: iwlwifi
State: connected
Default: yes
HW Address: 74:E5:0B:1C:69:F4
Capabilities:
Speed: 54 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
*pokusna: Infra, 52:67:F0:FB:E0:3D, Freq 2412 MHz, Rate 54 Mb/s, Strength 59 WPA WPA2
IPv4 Settings:
Address: 10.0.0.62
Prefix: 24 (255.255.255.0)
Gateway: 10.0.0.138
DNS: 10.0.0.138
DNS: 8.8.8.8
ale mam tam natvrdo nastane to DNS
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DNS: 10.0.0.138
DNS: 8.8.8.8
Pak nechápu, proč se to nezapsalo do /etc/resolv.conf
Projdi adresář /etc/resolvconf/resolv.conf.d, jsou tam dva soubory, ani v jednom by neměla být žádná IP "natvrdo"
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Jak to dopadlo?
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běž do network manageru a smaž všechny připojení co tam jsou
připoj se kabelem k DHCP serveru
a zadej sudo service network-manager restartmělo by to vytvořit upně nové drátové připojení které bude vše přebírat z dhcp
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tak to vypada ze to asi zabralo ;-)
diky;-)