Madwimax: modem conectando mas sem internet

Question

Estou usando o pacote madwimax para conectar um modem USB da Samsung à Internet. Ele funcionou bem antes, em versões anteriores do Ubuntu, mas agora que fiz o upgrade para o Ubuntu 12.10, tive problemas para me conectar. Aqui está o que eu tenho:

Do meu syslog, vejo que o modem se conecta bem à internet:

$ tail syslog
Nov 25 19:22:56 server_name kernel: [ 7643.313567] usb 1-1: >New USB device found, idVendor=04e8, idProduct=6761
Nov 25 19:22:56 server_name kernel: [ 7643.313585] usb 1-1: >New USB device strings: Mfr=1, Product=2, SerialNumber=0
Nov 25 19:22:56 server_name kernel: [ 7643.313598] usb 1-1: >Product: Samsung USB mWiMAX Modem 
Nov 25 19:22:56 server_name kernel: [ 7643.313609] usb 1-1: >Manufacturer: SAMSUNG ELECTRONICS Co.Ltd.
Nov 25 19:22:56 server_name kernel: [ 7643.320211] scsi5 : usb-storage 1-1:1.1
Nov 25 19:23:02 server_name dhclient: DHCPDISCOVER on wimax0 to 255.255.255.255 port 67 interval 3
Nov 25 19:23:02 server_name dhclient: DHCPREQUEST of XXX.XXX.XXX.XXX on wimax0 to 255.255.255.255 port 67
Nov 25 19:23:02 server_name dhclient: DHCPOFFER of XXX.XXX.XXX.XXX from XXX.XXX.XXX.XXX
Nov 25 19:23:02 server_name dhclient: DHCPACK of XXX.XXX.XXX.XXX from XXX.XXX.XXX.XXX
Nov 25 19:23:02 server_name dhclient: bound to XXX.XXX.XXX.XXX -- renewal in 4311 seconds.

não vejo nada estranho no dmesg:

[ 6311.413438] scsi 3:0:0:0: >CD-ROM            Samsung  Install Disk     0.10 PQ: 0 ANSI: 0 CCS
[ 6311.445249] sr0: scsi3-mmc drive: 0x/0x caddy
[ 6311.445920] sr 3:0:0:0: >Attached scsi CD-ROM sr0
[ 6311.446619] sr 3:0:0:0: >Attached scsi generic sg1 type 5
[ 6311.455124] sr0: Hmm, seems the drive doesn't support multisession CD's
[ 6311.485119] sr0: CDROM (ioctl) error, command: Xpwrite, Read disk info 51 00 00 00 00 00 00 00 02 00
[ 6311.485629] sr: Sense Key : Hardware Error [current] 
[ 6311.485644] sr: Add. Sense: No additional sense information
[ 6509.366803] usb 1-1: >USB disconnect, device number 5
[ 6739.568110] usb 1-1: >new high-speed USB device number 6 using ehci_hcd
[ 6739.701153] usb 1-1: >New USB device found, idVendor=04e8, idProduct=6761
[ 6739.701171] usb 1-1: >New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 6739.701184] usb 1-1: >Product: Samsung USB mWiMAX Modem  
[ 6739.701195] usb 1-1: >Manufacturer: SAMSUNG ELECTRONICS Co.Ltd.
[ 6739.710107] scsi4 : usb-storage 1-1:1.1
[ 6740.709747] scsi 4:0:0:0: >CD-ROM            Samsung  Install Disk     0.10 PQ: 0 ANSI: 0 CCS
[ 6740.741201] sr0: scsi3-mmc drive: 0x/0x caddy
[ 6740.741873] sr 4:0:0:0: >Attached scsi CD-ROM sr0
[ 6740.742613] sr 4:0:0:0: >Attached scsi generic sg1 type 5
[ 6740.755544] sr0: Hmm, seems the drive doesn't support multisession CD's
[ 6740.781039] sr0: CDROM (ioctl) error, command: Xpwrite, Read disk info 51 00 00 00 00 00 00 00 02 00
[ 6740.781357] sr: Sense Key : Hardware Error [current] 
[ 6740.781366] sr: Add. Sense: No additional sense information
[ 6964.229412] type=1400 audit(1353885097.721:13): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/mysqld" pid=14883 comm="apparmor_parser"
[ 6964.930207] type=1400 audit(1353885098.421:14): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=14882 comm="apparmor_parser"
[ 6964.934760] type=1400 audit(1353885098.425:15): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=14882 comm="apparmor_parser"
[ 6964.935108] type=1400 audit(1353885098.425:16): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=14882 comm="apparmor_parser"
[ 6965.218809] type=1400 audit(1353885098.709:17): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/tcpdump" pid=14885 comm="apparmor_parser"
[ 6966.215718] type=1400 audit(1353885099.705:18): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/mysqld" pid=14933 comm="apparmor_parser"
[ 6966.929916] type=1400 audit(1353885100.421:19): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=14932 comm="apparmor_parser"
[ 6966.930401] type=1400 audit(1353885100.421:20): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=14932 comm="apparmor_parser"
[ 6966.930743] type=1400 audit(1353885100.421:21): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=14932 comm="apparmor_parser"
[ 6967.212826] type=1400 audit(1353885100.705:22): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/tcpdump" pid=14935 comm="apparmor_parser"
[ 7098.436770] r8169 0000:02:00.0: >eth0: link down
[ 7098.436793] r8169 0000:02:00.0: >eth0: link down
[ 7098.437360] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 7100.029494] r8169 0000:02:00.0: >eth0: link up
[ 7100.030390] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 7408.143352] usb 1-1: >USB disconnect, device number 6
[ 7643.180108] usb 1-1: >new high-speed USB device number 7 using ehci_hcd
[ 7643.313567] usb 1-1: >New USB device found, idVendor=04e8, idProduct=6761
[ 7643.313585] usb 1-1: >New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 7643.313598] usb 1-1: >Product: Samsung USB mWiMAX Modem  
[ 7643.313609] usb 1-1: >Manufacturer: SAMSUNG ELECTRONICS Co.Ltd.
[ 7643.320211] scsi5 : usb-storage 1-1:1.1

Quando eu executo o comando madwimax, também não vejo erros:

$ madwimax -v
Bus 001 Device 006: ID XXX:XXXX
Device found
Claimed interface
Chip info: cmc730_v2.1
Firmware info: u200_rev1-2.9.50-DA15
MAC: XXXXXXXXXXXXX
Allocated tap interface: wimax0

Embora eu não veja o IP aparecendo aqui. Eu normalmente via a conexão IP aparecer, mas agora só vejo isso no syslog, e isso é confirmado pelo ipconfig:

$ ifconfig
eth0      Link encap:Ethernet  HWaddr XXXXXXXXXXX  
          inet addr:192.168.0.1  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::201:c0ff:fe05:b366/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:65197 errors:0 dropped:0 overruns:0 frame:0
          TX packets:38986 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:80731178 (80.7 MB)  TX bytes:3893255 (3.8 MB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1277 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1277 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:304270 (304.2 KB)  TX bytes:304270 (304.2 KB)

wimax0    Link encap:Ethernet  HWaddr XXXXXXXXXXXXXXX  
          inet addr:XXX.XXX.XXX.XXX  Bcast:XXX.XXX.XXX.XXX  Mask:255.255.248.0
          inet6 addr: XXXXXXXXXX/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1386  Metric:1
          RX packets:2 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500 
          RX bytes:698 (698.0 B)  TX bytes:1082 (1.0 KB)

Eu também descarreguei todas as regras do iptables:

$ iptables -L -n
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Se eu conectar este modem USB a outro computador, ele se conectará bem. Alguém tem alguma ideia?

    

Answer 1

Verifique se o seu gateway de roteamento padrão usa corretamente o gateway do modem. Tente um traceroute, não se queixa de nenhuma rota para hospedar?