12.04lts: no network internet

Posted by dgermann on Ask Ubuntu See other posts from Ask Ubuntu or by dgermann
Published on 2014-08-23T20:48:23Z Indexed on 2014/08/23 22:34 UTC
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Friends--

Cannot connect reliably to ethernet nor at all to Internet:

Symptoms: About 2 weeks ago did an upgrade. Have not been able to connect to ethernet nor Internet. Today, for example, boot up this System76 laptop and there was no network connection. Did sudo mount -a and got some internal network connectivity:

[email protected]:/sam$ ping earth 
PING earth (192.168.0.201) 56(84) bytes of data. 
64 bytes from earth (192.168.0.201): icmp_req=1 ttl=64 time=0.160 ms 
64 bytes from earth (192.168.0.201): icmp_req=2 ttl=64 time=0.177 ms 
64 bytes from earth (192.168.0.201): icmp_req=3 ttl=64 time=0.159 ms 
^C 
--- earth ping statistics --- 
3 packets transmitted, 3 received, 0% packet loss, time 1998ms 
rtt min/avg/max/mdev = 0.159/0.165/0.177/0.013 ms 
[email protected]:/sam$ ping doug2 
PING doug (192.168.0.4) 56(84) bytes of data. 
^C 
--- doug ping statistics --- 
3 packets transmitted, 0 received, 100% packet loss, time 1999ms 
[email protected]:/sam$ ping sharon 
PING sharon (192.168.0.111) 56(84) bytes of data. 
64 bytes from sharon (192.168.0.111): icmp_req=1 ttl=128 time=0.276 ms 
^C 
--- sharon ping statistics --- 
6 packets transmitted, 1 received, 83% packet loss, time 5031ms 
rtt min/avg/max/mdev = 0.276/0.276/0.276/0.000 ms 
[email protected]:/sam$ ping 192.168.0.1 
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data. 
^C 
--- 192.168.0.1 ping statistics --- 
6 packets transmitted, 0 received, 100% packet loss, time 4999ms 

[email protected]:/sam$ ping earth 
PING earth (192.168.0.201) 56(84) bytes of data. 
^C 
--- earth ping statistics --- 
5 packets transmitted, 0 received, 100% packet loss, time 4032ms 

[email protected]:/sam$ ping yahoo.com 
ping: unknown host yahoo.com 

[email protected]:/sam$ ping ubuntu.com 
ping: unknown host ubuntu.com 

[email protected]:/sam$ ping 8.8.8.8 
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 
^C 
--- 8.8.8.8 ping statistics --- 
14 packets transmitted, 0 received, 100% packet loss, time 13103ms

Note that earth is the cifs server, and one time pinging it worked, later failed.

Clues:

[email protected]:/sam$ grep -i eth /var/log/syslog |tail 
Aug 23 15:32:46 ubuntu kernel: [ 5328.070401] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Aug 23 15:32:48 ubuntu kernel: [ 5330.651139] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=19090 PROTO=2 
Aug 23 15:34:51 ubuntu kernel: [ 5453.072279] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Aug 23 15:34:55 ubuntu kernel: [ 5457.085433] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16137 PROTO=2 
Aug 23 15:36:56 ubuntu kernel: [ 5578.074492] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Aug 23 15:37:00 ubuntu kernel: [ 5582.359006] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16150 PROTO=2 
Aug 23 15:39:01 ubuntu kernel: [ 5703.074410] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Aug 23 15:39:03 ubuntu kernel: [ 5705.070122] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16163 PROTO=2 
Aug 23 15:41:06 ubuntu kernel: [ 5828.074387] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Aug 23 15:41:13 ubuntu kernel: [ 5835.319941] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=23298 PROTO=2 





[email protected]:/sam$ ifconfig -a 
eth0      Link encap:Ethernet  HWaddr [BLANKED]  
          inet addr:192.168.0.7  Bcast:192.168.0.255  Mask:255.255.255.0 
          inet6 addr: fe80::21b:fcff:fe29:9dfc/64 Scope:Link 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 
          RX packets:3961 errors:0 dropped:0 overruns:0 frame:0 
          TX packets:2007 errors:0 dropped:0 overruns:0 carrier:0 
          collisions:0 txqueuelen:1000 
          RX bytes:991204 (991.2 KB)  TX bytes:252908 (252.9 KB) 
          Interrupt:16 Base address:0xec00 

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:2190 errors:0 dropped:0 overruns:0 frame:0 
          TX packets:2190 errors:0 dropped:0 overruns:0 carrier:0 
          collisions:0 txqueuelen:0 
          RX bytes:168052 (168.0 KB)  TX bytes:168052 (168.0 KB) 

wlan0     Link encap:Ethernet  HWaddr 00:19:d2:72:5a:0c  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1 
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0 
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B) 




[email protected]:/sam$ iwconfig 
lo        no wireless extensions. 

wlan0     IEEE 802.11abg  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off 
          Power Management:off 

eth0      no wireless extensions. 




[email protected]:/sam$ lsmod 
Module                  Size  Used by 
des_generic            21191  0 
md4                    12523  0 
nls_iso8859_1          12617  1 
nls_cp437              12751  1 
vfat                   17308  1 
fat                    55605  1 vfat 
usb_storage            39646  1 
dm_crypt               22528  1 
joydev                 17393  0 
snd_hda_codec_analog    75395  1 
snd_hda_intel          32719  2 
pcmcia                 39826  0 
snd_hda_codec         109562  2 snd_hda_codec_analog,snd_hda_intel 
snd_hwdep              13276  1 snd_hda_codec 
ip6t_LOG               16846  4 
xt_hl                  12465  6 
ip6t_rt                12473  3 
snd_pcm                80916  2 snd_hda_intel,snd_hda_codec 
nf_conntrack_ipv6      13581  7 
nf_defrag_ipv6         13175  1 nf_conntrack_ipv6 
ipt_REJECT             12512  1 
ipt_LOG                12783  5 
xt_limit               12541  12 
xt_tcpudp              12531  21 
xt_addrtype            12596  4 
snd_seq_midi           13132  0 
xt_state               12514  14 
ip6table_filter        12711  1 
ip6_tables             22528  3 ip6t_LOG,ip6t_rt,ip6table_filter 
nf_conntrack_netbios_ns    12585  0 
nf_conntrack_broadcast    12541  1 nf_conntrack_netbios_ns 
nf_nat_ftp             12595  0 
nf_nat                 24959  1 nf_nat_ftp 
nf_conntrack_ipv4      19084  9 nf_nat 
nf_defrag_ipv4         12649  1 nf_conntrack_ipv4 
nf_conntrack_ftp       13183  1 nf_nat_ftp 
nf_conntrack           73847  8 nf_conntrack_ipv6,xt_state,nf_conntrack_netbios_ns,nf_conntrack_broadcast,nf_nat_ftp,nf_nat,nf_conntrack_ipv4,nf_conntrack_ftp 
iptable_filter         12706  1 
ip_tables              18106  1 iptable_filter 
snd_rawmidi            25424  1 snd_seq_midi 
psmouse                86982  0 
x_tables               22011  13 ip6t_LOG,xt_hl,ip6t_rt,ipt_REJECT,ipt_LOG,xt_limit,xt_tcpudp,xt_addrtype,xt_state,ip6table_filter,ip6_tables,iptable_filter,ip_tables 
arc4                   12473  2 
r592                   17808  0 
snd_seq_midi_event     14475  1 snd_seq_midi 
memstick               15857  1 r592 
yenta_socket           27465  0 
serio_raw              13027  0 
pcmcia_rsrc            18367  1 yenta_socket 
iwl3945                73186  0 
pcmcia_core            21511  3 pcmcia,yenta_socket,pcmcia_rsrc 
iwl_legacy             71334  1 iwl3945 
snd_seq                51592  2 snd_seq_midi,snd_seq_midi_event 
mac80211              436493  2 iwl3945,iwl_legacy 
snd_timer              28931  2 snd_pcm,snd_seq 
snd_seq_device         14172  3 snd_seq_midi,snd_rawmidi,snd_seq 
rfcomm                 38139  0 
bnep                   17830  2 
parport_pc             32114  0 
bluetooth             158447  10 rfcomm,bnep 
ppdev                  12849  0 
cfg80211              178877  3 iwl3945,iwl_legacy,mac80211 
asus_laptop            23693  0 
sparse_keymap          13658  1 asus_laptop 
input_polldev          13648  1 asus_laptop 
nls_utf8               12493  6 
cifs                  258037  10 
snd                    62218  13 snd_hda_codec_analog,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device 
soundcore              14635  1 snd 
mac_hid                13077  0 
snd_page_alloc         14108  2 snd_hda_intel,snd_pcm 
lp                     17455  0 
parport                40930  3 parport_pc,ppdev,lp 
i915                  428418  3 
firewire_ohci          40172  0 
sdhci_pci              18324  0 
sdhci                  28241  1 sdhci_pci 
firewire_core          56940  1 firewire_ohci 
crc_itu_t              12627  1 firewire_core 
r8169                  56396  0 
drm_kms_helper         45466  1 i915 
drm                   197641  4 i915,drm_kms_helper 
i2c_algo_bit           13199  1 i915 
video                  19115  1 i915 



[email protected]:/sam$ dmesg |grep eth 
[    0.116936] i2c-core: driver [aat2870] using legacy suspend method 
[    0.116939] i2c-core: driver [aat2870] using legacy resume method 
[    1.453811] r8169 0000:03:07.0: eth0: RTL8169sb/8110sb at 0xf840ec00, [BLANKED], XID 10000000 IRQ 16 
[    1.453815] r8169 0000:03:07.0: eth0: jumbo features [frames: 7152 bytes, tx checksumming: ok] 
[   25.681231] ADDRCONF(NETDEV_UP): eth0: link is not ready 
[  154.037318] r8169 0000:03:07.0: eth0: link down 
[  154.037329] r8169 0000:03:07.0: eth0: link down 
[  154.037596] ADDRCONF(NETDEV_UP): eth0: link is not ready 
[  155.583162] r8169 0000:03:07.0: eth0: link up 
[  155.583366] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready 
[  156.637048] r8169 0000:03:07.0: eth0: link down 
[  156.637066] r8169 0000:03:07.0: eth0: link down 
[  156.637339] ADDRCONF(NETDEV_UP): eth0: link is not ready 
[  156.773699] r8169 0000:03:07.0: eth0: link down 
[  156.773983] ADDRCONF(NETDEV_UP): eth0: link is not ready 
[  158.456181] r8169 0000:03:07.0: eth0: link up 
[  158.456378] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready 
[  159.364468] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[  162.384496] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=38877 PROTO=2 
[  166.272457] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[  166.422333] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=40695 PROTO=2 
[  168.736049] eth0: no IPv6 routers present 
[  183.572472] r8169 0000:03:07.0: eth0: link down 
[  183.572490] r8169 0000:03:07.0: eth0: link down 
[  183.572934] ADDRCONF(NETDEV_UP): eth0: link is not ready 
[  185.204801] r8169 0000:03:07.0: eth0: link up 
[  185.205005] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready 
[ 3620.680451] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 3621.068431] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 3624.912973] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=9118 PROTO=2 
[ 3631.088069] eth0: no IPv6 routers present 
[ 3703.062980] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 3703.465330] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=9210 PROTO=2 
[ 3828.062951] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 3833.617772] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=9749 PROTO=2 
[ 3953.062920] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 3955.675129] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=15983 PROTO=2 
[ 4078.062922] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 4078.386319] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=15997 PROTO=2 
[ 4203.062899] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 4203.559241] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16011 PROTO=2 
[ 4328.062833] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 4328.930922] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16027 PROTO=2 
[ 4453.062811] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 4453.950224] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16039 PROTO=2 
[ 4578.062742] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 4580.626432] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=13738 PROTO=2 
[ 4703.062704] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 4706.310170] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=15942 PROTO=2 
[ 4828.062707] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 4832.174324] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16505 PROTO=2 
[ 4953.062628] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 4961.469282] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16090 PROTO=2 
[ 5078.062552] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 5080.776462] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=17239 PROTO=2 
[ 5203.070394] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 5205.358134] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=17665 PROTO=2 
[ 5328.070401] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 5330.651139] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=19090 PROTO=2 
[ 5453.072279] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 5457.085433] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16137 PROTO=2 
[ 5578.074492] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 5582.359006] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16150 PROTO=2 
[ 5703.074410] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 5705.070122] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED]--- SRC=192.168.0.10 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16163 PROTO=2 
[ 5828.074387] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED][BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 5835.319941] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED][BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=23298 PROTO=2 
[ 5953.074429] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED][BLANKED]--- SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
[ 5961.925481] [UFW BLOCK] IN=eth0 OUT= MAC=[BLANKED][BLANKED]--- SRC=192.168.0.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=24261 PROTO=2 



[email protected]:/sam$ lspci -nnk |grep -iA2 eth 
03:07.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8169 PCI Gigabit Ethernet Controller [10ec:8169] (rev 10) 
    Subsystem: ASUSTeK Computer Inc. Device [1043:11e5] 
    Kernel driver in use: r8169 



[email protected]:/sam$ route -n 
Kernel IP routing table 
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface 
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0 
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eth0 
192.168.0.0     0.0.0.0         255.255.255.0   U     1      0        0 eth0 



[email protected]:/sam$ nm-tool 

NetworkManager Tool 

State: connected (global) 

- Device: eth0  [Ifupdown (eth0)] ---------------------------------------------- 
  Type:              Wired 
  Driver:            r8169 
  State:             connected 
  Default:           yes 
  HW Address:        [BLANKED] 

  Capabilities: 
    Carrier Detect:  yes 
    Speed:           100 Mb/s 

  Wired Properties 
    Carrier:         on 

  IPv4 Settings: 
    Address:         192.168.0.7 
    Prefix:          24 (255.255.255.0) 
    Gateway:         192.168.0.1 

    DNS:             192.168.0.1 


- Device: wlan0 ---------------------------------------------------------------- 
  Type:              802.11 WiFi 
  Driver:            iwl3945 
  State:             disconnected 
  Default:           no 
  HW Address:        00:19:D2:72:5A:0C 

  Capabilities: 

  Wireless Properties 
    WEP Encryption:  yes 
    WPA Encryption:  yes 
    WPA2 Encryption: yes 

  Wireless Access Points 
    ATT592:          Infra, 30:60:23:76:FE:60, Freq 2437 MHz, Rate 54 Mb/s, Strength 24 WPA WPA2 


[email protected]:/sam$ nslookup ubuntu.com 
;; connection timed out; no servers could be reached 




[email protected]:/sam$ dig ubuntuforums.org 

; <<>> DiG 9.8.1-P1 <<>> ubuntuforums.org 
;; global options: +cmd 
;; connection timed out; no servers could be reached 



[email protected]:/sam$ sudo ifconfig eth0 up 



[email protected]:/sam$ dhcpcd eth0 
The program 'dhcpcd' can be found in the following packages: 
 * dhcpcd 
 * dhcpcd5 
Try: sudo apt-get install <selected package> 



[email protected]:/sam$ lspci -k 
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: agpgart-intel 
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) 
    Subsystem: ASUSTeK Computer Inc. Device 1252 
    Kernel driver in use: i915 
    Kernel modules: intelfb, i915 
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03) 
    Subsystem: ASUSTeK Computer Inc. Device 1252 
00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 02) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: snd_hda_intel 
    Kernel modules: snd-hda-intel 
00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 02) 
    Kernel driver in use: pcieport 
    Kernel modules: shpchp 
00:1c.1 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 2 (rev 02) 
    Kernel driver in use: pcieport 
    Kernel modules: shpchp 
00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 02) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: uhci_hcd 
00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 02) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: uhci_hcd 
00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 02) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: uhci_hcd 
00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 02) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: uhci_hcd 
00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 02) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: ehci_hcd 
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) 
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel modules: leds-ss4200, iTCO_wdt, intel-rng 
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: ata_piix 
00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 02) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel modules: i2c-i801 
02:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) 
    Subsystem: Intel Corporation PRO/Wireless 3945ABG Network Connection 
    Kernel driver in use: iwl3945 
    Kernel modules: iwl3945 
03:01.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev b3) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: yenta_cardbus 
    Kernel modules: yenta_socket 
03:01.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller (rev 08) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: firewire_ohci 
    Kernel modules: firewire-ohci 
03:01.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 17) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: sdhci-pci 
    Kernel modules: sdhci-pci 
03:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 08) 
    Subsystem: ASUSTeK Computer Inc. Device 1297 
    Kernel driver in use: r592 
    Kernel modules: r592 
03:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8169 PCI Gigabit Ethernet Controller (rev 10) 
    Subsystem: ASUSTeK Computer Inc. Device 11e5 
    Kernel driver in use: r8169 
    Kernel modules: r8169 



[email protected]:/sam$ 

Things I have tried:

sudo start network-manager: no help gksudo gedit    /etc/network/interfaces changed line to iface eth0 inet dhcp: no help    gksudo gedit /etc/NetworkManager/NetworkManager.conf, I changed    managed=false to managed=true. Then sudo service network-manager    restart: no help: network is unreachable sudo pkill -9    NetworkManager: no help gksudo gedit /etc/resolve.conf added line    nameseriver 8.8.8.8: no help

I know very little about networking; to date this has simply worked.

Thanks for your help!

:- Doug.

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