Arch linux destination host unreachable

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Arch Linux
#2 2008-06-12 14:38:05
Re: SOLVED Unable to Ping(or connect at all) between Arch Installs
#3 2008-06-12 15:14:36
Re: SOLVED Unable to Ping(or connect at all) between Arch Installs

Arch Linux

I am not really a newbie but I think this may be a newbie problem. Here’s the story. I have been happily running Arch on my main Desktop PC for over a year now and everything has been working well with it. During this time I also had two Ubuntu installs(one is a Server and the other was an HTPC) running on the network along with various other devices(Xbox, Playstation3, a couple media streamers) and all the devices seemed to coexist fine and talk to each other. Recently I pulled the Ubuntu based HTPC out of service. I stripped it down and moved some components around between my PC’s and am now setting up the new PC to replace my Ubuntu server. I decided to use Arch as the basis for the new improved server. So currently I have 3 pc’s hooked up to the network and they are named as follows:

Ubuntu Server — ouldserver
Arch Desktop Install — hal
New Arch Server — deathstar

From ouldserver I can ping both Arch Install, transfer files back and forth and SSH into either.

From both Arch installs I can ping, SSH and transfer files to ouldserver.

I cannot ping, SSH or transfer files between either Arch machine.

Pinging from deathstar to hal [kevin@deathstar ~]$ ping hal PING hal (192.168.15.2) 56(84) bytes of data. From deathstar (192.168.15.10) icmp_seq=1 Destination Host Unreachable From deathstar (192.168.15.10) icmp_seq=2 Destination Host Unreachable From deathstar (192.168.15.10) icmp_seq=3 Destination Host Unreachable From deathstar (192.168.15.10) icmp_seq=4 Destination Host Unreachable From deathstar (192.168.15.10) icmp_seq=5 Destination Host Unreachable From deathstar (192.168.15.10) icmp_seq=6 Destination Host Unreachable ^C --- hal ping statistics --- 8 packets transmitted, 0 received, +6 errors, 100% packet loss, time 7032ms , pipe 3

Pinging from hal to deathstar [kevin@hal ~]$ ping deathstar PING deathstar (192.168.15.10) 56(84) bytes of data. From hal (192.168.15.2) icmp_seq=1 Destination Host Unreachable From hal (192.168.15.2) icmp_seq=2 Destination Host Unreachable From hal (192.168.15.2) icmp_seq=3 Destination Host Unreachable From hal (192.168.15.2) icmp_seq=4 Destination Host Unreachable From hal (192.168.15.2) icmp_seq=5 Destination Host Unreachable From hal (192.168.15.2) icmp_seq=6 Destination Host Unreachable ^C --- deathstar ping statistics --- 8 packets transmitted, 0 received, +6 errors, 100% packet loss, time 7031ms , pipe 3

Deathstar conf files Networking section of rc.conf # ----------------------------------------------------------------------- # NETWORKING # ----------------------------------------------------------------------- # # HOSTNAME: Hostname of machine. Should also be put in /etc/hosts # HOSTNAME="deathstar" # Use 'ifconfig -a' or 'ls /sys/class/net/' to see all available interfaces. # # Interfaces to start at boot-up (in this order) # Declare each interface then list in INTERFACES # - prefix an entry in INTERFACES with a ! to disable it # - no hyphens in your interface names - Bash doesn't like it # # DHCP: Set your interface to "dhcp" (eth0="dhcp") # Wireless: See network profiles below # lo="lo 127.0.0.1" eth0="dhcp" INTERFACES=(lo eth0) # Routes to start at boot-up (in this order) # Declare each route then list in ROUTES # - prefix an entry in ROUTES with a ! to disable it # gateway="default gw 192.168.15.1" ROUTES=(!gateway) # # /etc/hosts.allow # nfsd: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0 portmap: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0 lockd: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0 rquotad: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0 mountd: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0 statd: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0 sshd: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0 # End of file # # /etc/hosts.deny # ALL: ALL: DENY # End of file

Hal’s conf files are identical for our intents here. Does anyone have any ideas what could be wrong?

Last edited by ould (2008-06-13 00:50:05)

#2 2008-06-12 14:38:05

Re: SOLVED Unable to Ping(or connect at all) between Arch Installs

from both boxes ping the ouldserver. After a successful ping, try to ping each other.

Also, from Arch boxes the output of ifconfig -a and route -n would be useful to make sure nothing funky is going on.

Feel free to sanitize any public IPs in ifconfig/route

*edit: Also, how are they physically linked up?

Last edited by dwi (2008-06-12 14:53:28)

#3 2008-06-12 15:14:36

Re: SOLVED Unable to Ping(or connect at all) between Arch Installs

Can you do the following:

from both boxes ping the ouldserver. After a successful ping, try to ping each other.

[kevin@deathstar ~]$ ping ouldserver PING ouldserver (192.168.15.7) 56(84) bytes of data. 64 bytes from ouldserver (192.168.15.7): icmp_seq=1 ttl=64 time=0.444 ms 64 bytes from ouldserver (192.168.15.7): icmp_seq=2 ttl=64 time=0.167 ms 64 bytes from ouldserver (192.168.15.7): icmp_seq=3 ttl=64 time=0.159 ms 64 bytes from ouldserver (192.168.15.7): icmp_seq=4 ttl=64 time=0.163 ms 64 bytes from ouldserver (192.168.15.7): icmp_seq=5 ttl=64 time=0.161 ms 64 bytes from ouldserver (192.168.15.7): icmp_seq=6 ttl=64 time=0.136 ms ^C --- ouldserver ping statistics --- 6 packets transmitted, 6 received, 0% packet loss, time 5000ms rtt min/avg/max/mdev = 0.136/0.205/0.444/0.107 ms [kevin@deathstar ~]$ ping hal PING hal (192.168.15.2) 56(84) bytes of data. From deathstar (192.168.15.10) icmp_seq=1 Destination Host Unreachable From deathstar (192.168.15.10) icmp_seq=2 Destination Host Unreachable From deathstar (192.168.15.10) icmp_seq=3 Destination Host Unreachable ^C --- hal ping statistics --- 5 packets transmitted, 0 received, +3 errors, 100% packet loss, time 4011ms , pipe 3

[kevin@hal ~]$ ping ouldserver PING ouldserver (192.168.15.7) 56(84) bytes of data. 64 bytes from ouldserver (192.168.15.7): icmp_seq=1 ttl=64 time=0.176 ms 64 bytes from ouldserver (192.168.15.7): icmp_seq=2 ttl=64 time=0.174 ms 64 bytes from ouldserver (192.168.15.7): icmp_seq=3 ttl=64 time=0.177 ms 64 bytes from ouldserver (192.168.15.7): icmp_seq=4 ttl=64 time=0.176 ms 64 bytes from ouldserver (192.168.15.7): icmp_seq=5 ttl=64 time=0.175 ms ^C --- ouldserver ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 3998ms rtt min/avg/max/mdev = 0.174/0.175/0.177/0.014 ms [kevin@hal ~]$ ping deathstar PING deathstar (192.168.15.10) 56(84) bytes of data. From hal (192.168.15.2) icmp_seq=1 Destination Host Unreachable From hal (192.168.15.2) icmp_seq=2 Destination Host Unreachable From hal (192.168.15.2) icmp_seq=3 Destination Host Unreachable From hal (192.168.15.2) icmp_seq=4 Destination Host Unreachable From hal (192.168.15.2) icmp_seq=5 Destination Host Unreachable From hal (192.168.15.2) icmp_seq=6 Destination Host Unreachable ^C --- deathstar ping statistics --- 8 packets transmitted, 0 received, +6 errors, 100% packet loss, time 7031ms , pipe 3

Run: arp -n

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paste the output here.

Also, from Arch boxes the output of ifconfig -a and route -n would be useful to make sure nothing funky is going on.

Feel free to sanitize any public IPs in ifconfig/route

chad

[kevin@deathstar ~]$ arp -n Address HWtype HWaddress Flags Mask Iface 192.168.15.4 ether 00:0D:4B:03:1F:2E C eth0 192.168.15.20 ether 00:FF:70:7B:9F:74 C eth0 [kevin@deathstar ~]$ ifconfig -a eth0 Link encap:Ethernet HWaddr 00:50:8D:91:8A:02 inet addr:192.168.15.10 Bcast:192.168.15.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:132560 errors:0 dropped:0 overruns:0 frame:0 TX packets:911 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:8079698 (7.7 Mb) TX bytes:101563 (99.1 Kb) Interrupt:20 eth1 Link encap:Ethernet HWaddr 00:50:8D:91:8A:03 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) Interrupt:23 Base address:0x2000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:15 errors:0 dropped:0 overruns:0 frame:0 TX packets:15 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1632 (1.5 Kb) TX bytes:1632 (1.5 Kb) [kevin@deathstar ~]$ route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.15.0 * 255.255.255.0 U 0 0 0 eth0 169.254.0.0 * 255.255.0.0 U 0 0 0 eth0 default 192.168.15.1 0.0.0.0 UG 0 0 0 eth0

[kevin@hal ~]$ arp -n Address HWtype HWaddress Flags Mask Iface 192.168.15.20 ether 00:FF:70:7B:9F:74 C eth0 192.168.15.7 ether 00:50:8D:45:56:5B C eth0 192.168.15.1 ether 00:18:F3:85:65:46 C eth0 192.168.15.10 (incomplete) eth0 192.168.15.4 ether 00:0D:4B:03:1F:2E C eth0 [kevin@hal ~]$ ifconfig -a eth0 Link encap:Ethernet HWaddr 00:14:85:22:4E:9D inet addr:192.168.15.2 Bcast:192.168.15.255 Mask:255.255.255.0 inet6 addr: fe80::214:85ff:fe22:4e9d/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:534115 errors:0 dropped:0 overruns:0 frame:0 TX packets:122709 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:57006495 (54.3 Mb) TX bytes:45069306 (42.9 Mb) Interrupt:23 Base address:0x6000 eth1 Link encap:Ethernet HWaddr 00:14:85:23:04:0C 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) Interrupt:17 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:5049 errors:0 dropped:0 overruns:0 frame:0 TX packets:5049 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1207053 (1.1 Mb) TX bytes:1207053 (1.1 Mb) pan0 Link encap:Ethernet HWaddr 5A:06:67:39:29:92 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:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) [kevin@hal ~]$ route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.15.0 * 255.255.255.0 U 0 0 0 eth0 169.254.0.0 * 255.255.0.0 U 0 0 0 eth0 default 192.168.15.1 0.0.0.0 UG 0 0 0 eth0

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