Results 1 to 5 of 5

Thread: Unable to ping via ETH0, but connected via ETH0

Threaded View

  1. #1
    Join Date
    Jun 2007
    Beans
    48
    Distro
    Ubuntu 10.04 Lucid Lynx

    Unable to ping via ETH0, but connected via ETH0

    UB Server 12.04. Router is 192.168.4.1
    abreviated:
    Code:
    root@Server900:/home/user# iptables -L -n
    Chain INPUT (policy ACCEPT)
    Chain FORWARD (policy ACCEPT)
    Chain OUTPUT (policy ACCEPT)
    Code:
    root@Server900:/home/user# ufw status
    Status: inactive
    Code:
    root@Server900:/home/user# ifconfig
    eth0      Link encap:Ethernet  HWaddr 00:80:48:**:**:11
              inet addr:192.168.4.27  Bcast:192.168.4.255  Mask:255.255.255.0
              inet6 addr: fe80::280:48ff:fed3:611/64 Scope:Link
              UP BROADCAST RUNNING 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)
              Interrupt:5 Base address:0xe000 Memory:df000000-df020000
    
    eth1      Link encap:Ethernet  HWaddr 00:10:4b:**:**:05
              inet addr:192.168.4.41  Bcast:192.168.4.255  Mask:255.255.255.0
              inet6 addr: fe80::210:4bff:fe9a:3305/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:1255 errors:0 dropped:0 overruns:0 frame:0
              TX packets:25 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:218557 (218.5 KB)  TX bytes:1950 (1.9 KB)
              Interrupt:5 Base address:0xa000
    
    eth2      Link encap:Ethernet  HWaddr 00:80:48:**:**:05
              inet addr:192.168.4.42  Bcast:192.168.4.255  Mask:255.255.255.0
              inet6 addr: fe80::280:48ff:fed3:605/64 Scope:Link
              UP BROADCAST RUNNING 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)
              Interrupt:10 Base address:0xe400 Memory:df002000-df022000
    
    eth3      Link encap:Ethernet  HWaddr 00:80:48:**:**:28
              inet addr:192.168.4.43  Bcast:192.168.4.255  Mask:255.255.255.0
              inet6 addr: fe80::280:48ff:fed3:628/64 Scope:Link
              UP BROADCAST RUNNING 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)
              Interrupt:10 Base address:0xe800 Memory:df004000-df024000
    
    eth4      Link encap:Ethernet  HWaddr 08:00:09:**:**:89
              inet addr:192.168.4.44  Bcast:192.168.4.255  Mask:255.255.255.0
              inet6 addr: fe80::a00:9ff:fefa:df89/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:4178 errors:1 dropped:0 overruns:0 frame:0
              TX packets:3343 errors:403 dropped:0 overruns:0 carrier:402
              collisions:0 txqueuelen:1000
              RX bytes:530816 (530.8 KB)  TX bytes:472199 (472.1 KB)
              Interrupt:11 Base address:0xec00 DMA chan:4
    
    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:145 errors:0 dropped:0 overruns:0 frame:0
              TX packets:145 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0
              RX bytes:13727 (13.7 KB)  TX bytes:13727 (13.7 KB)
    /etc/network/interfaces

    Code:
    # This file describes the network interfaces available on your system
    # and how to activate them. For more information, see interfaces(5).
    
    # The loopback network interface
    auto lo
    iface lo inet loopback
    
    # The primary network interface
    auto eth0
    #iface eth0 inet dhcp
    iface eth0 inet static
    address 192.168.4.27
    netmask 255.255.255.0
    gateway 192.168.4.1
    broadcast 192.168.4.255
    network 192.168.4.0
    dns-nameservers 8.8.8.8 208.67.222.222
    
    
    auto eth1
    iface eth1 inet static
    address 192.168.4.41
    netmask 255.255.255.0
    gateway 192.168.4.1
    broadcast 192.168.4.255
    network 192.168.4.0
    dns-nameservers 8.8.8.8 208.67.222.222
    
    auto eth2
    iface eth2 inet static
    address 192.168.4.42
    netmask 255.255.255.0
    gateway 192.168.4.1
    broadcast 192.168.4.255
    network 192.168.4.0
    dns-nameservers 8.8.8.8 208.67.222.222
    
    auto eth3
    iface eth3 inet static
    address 192.168.4.43
    netmask 255.255.255.0
    gateway 192.168.4.1
    broadcast 192.168.4.255
    network 192.168.4.0
    dns-nameservers 8.8.8.8 208.67.222.222
    
    auto eth4
    iface eth4 inet static
    address 192.168.4.44
    netmask 255.255.255.0
    gateway 192.168.4.1
    broadcast 192.168.4.255
    network 192.168.4.0
    I am SSH'd in to 192.168.4.27 (ETH0) from Win Box (using IP, not name)
    Code:
    netstat eth0
    Active Internet connections (w/o servers)
    Proto Recv-Q Send-Q Local Address           Foreign Address         State
    tcp        0     52 192.168.4.27:ssh        dc:2817                 ESTABLISHED
    tcp        0      0 192.168.4.27:ssh        dc:2343                 ESTABLISHED
    I have another Cat-5 plugged in to ETH4, both going to same router. I have swapped cables.
    I have rebooted multiple times.

    Code:
     ping -I eth0 192.168.4.1
    PING 192.168.4.1 (192.168.4.1) from 192.168.4.27 eth0: 56(84) bytes of data.
    From 192.168.4.27 icmp_seq=1 Destination Host Unreachable
    
    and
    
    ping -I eth0 8.8.8.8
    PING 8.8.8.8 (8.8.8.8) from 192.168.4.27 eth0: 56(84) bytes of data.
    From 192.168.4.27 icmp_seq=1 Destination Host Unreachable
    
    but 
    
    ping -I eth0 192.168.4.27
    PING 192.168.4.27 (192.168.4.27) from 192.168.4.27 eth0: 56(84) bytes of data.
    64 bytes from 192.168.4.27: icmp_req=1 ttl=64 time=0.175 ms
    Yet,
    Code:
    ping -I eth4 192.168.4.1
    PING 192.168.4.1 (192.168.4.1) from 192.168.4.44 eth4: 56(84) bytes of data.
    64 bytes from 192.168.4.1: icmp_req=1 ttl=64 time=3.13 ms
    I'm lost. Since I can connect via SSH my first thought was Firewall, but IPTables is all "allow" and UFW is off.

    The "odd" thing is . Ping to "localhost" from ETH0 and ETH4 fails when using "ping -I etc..", but "ping localhost" works.

    Anyone know where I should start looking.
    Last edited by ub-newbie; April 6th, 2013 at 12:06 AM.

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •