Public bug reported:
I recently upgraded my ubuntu desktop pc from 11.04 to 11.10, upon
completing the update I tried to ssh into one of my servers on the
internet (a vps, its address is vps.p-s-e.tk) however I got the message
'no route to host'.
I then tested the connection by pinging the vps.p-s-e.tk and all pings
came back perfectly not one packet lost, I then tried nmap
sudo nmap vps.p-s-e.tk which came back with the expected ports
(including 22) marked as open
I then tried telneting to port 22 and got the same response 'Unable to connect
to remote host: No route to host'
'
thinking this may have been a problem with just this pc I installed ubuntu
11.10 on a separate pc and with a fresh install got the exact same response
note, the access problem occurs for all attempts to connect to the
server ie imap smtp http https etc
the client can connect to other servers / sites on the web ie google
(note I can still access/ ssh into the server (vps.p-s-e.tk) via other
linux/windows/android pcs/devices on the same lan segment ie 10.6.111.*)
having searched around the web for a fix for this problem I came across
a series of threads that in the end lead me to totally remove apparmor
from the pc (I don't know why it had come back as I had totally removed
it long before the update to 11.10)
however this did not solve the problem
also of note is that I host a web page off my home internet connection
and it cant access that from the pc either, again nmap shows the port as
open but nothing can seem to get to it ie telnet returns 'Unable to
connect to remote host: No route to host'
-------------------
notes
the client pc address is 10.6.111.238
other pcs can ssh into the client pc (Im sshd in from my mac right now)
this problem affects all user accounts on the pc inc root
ipv6 has been disabled
---------------------
root@xr34lind2:/home/james# lsb_release -rd
Description: Ubuntu 11.10
Release: 11.10
----------------------
root@xr34lind2:/home/james# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
default 10.6.111.254 0.0.0.0 UG 0 0
0 eth0
10.6.111.0 * 255.255.255.0 U 1 0
0 eth0
link-local * 255.255.0.0 U 1000
0 0 eth0
----------------------
ping examples
root@xr34lind2:/home/james# ping vps.p-s-e.tk
PING vps.p-s-e.tk (98.126.57.67) 56(84) bytes of data.
64 bytes from 98.126.57.67.static.customer.krypt.com (98.126.57.67): icmp_req=1
ttl=54 time=140 ms
>From brd4-vlan399.**************** (************): icmp_seq=2 Redirect
>Host(New nexthop: brd3-vlan399.************* (**********))
root@xr34lind2:/home/james# ping www.google.com
PING www.l.google.com (173.194.65.147) 56(84) bytes of data.
64 bytes from ee-in-f147.1e100.net (173.194.65.147): icmp_req=1 ttl=50
time=18.3 ms
>From brd4-vlan399.*********** (**************): icmp_seq=2 Redirect Host(New
>nexthop: brd3-vlan399.****************(***********))
some parts redacted for security reasons
----------------------
examples
>>telneting google on port 80
james@xr34lind2:~$ telnet www.google.com 80
Trying 173.194.65.104...
Connected to www.l.google.com.
Escape character is '^]'.
^]
telnet> quit
Connection closed.
>>telneting my server on port 80
james@xr34lind2:~$ telnet vps.p-s-e.tk 80
Trying 98.126.57.67...
telnet: Unable to connect to remote host: No route to host
>>telneting my server on port 22
james@xr34lind2:~$ telnet vps.p-s-e.tk 22
Trying 98.126.57.67...
telnet: Unable to connect to remote host: No route to host
>>telneting one of my other linux boxes on the local (non internet lan, it
>>still has several vlans to it ie 10.6.111.* 10.6.112.* etc)
james@xr34lind2:~$ telnet 10.6.111.230 22
Trying 10.6.111.230...
Connected to 10.6.111.230.
Escape character is '^]'.
SSH-2.0-OpenSSH_5.5p1 Debian-4ubuntu4
^]
telnet> quit
Connection closed.
>>telneting one of the other boxes (in this case a network printer) on the
>>local lan on port 80 (non internet lan, it still has several vlans to it ie
>>10.6.111.* 10.6.112.* etc)
james@xr34lind2:~$ telnet 10.6.112.243 80
Trying 10.6.112.243...
Connected to 10.6.112.243.
Escape character is '^]'.
^]
telnet> quit
Connection closed.
>>telneting my hosted web servise on port 80 (freewebs host this page set)
james@xr34lind2:~$ telnet www.p-s-e.tk 80
Trying 216.98.141.250...
Connected to wfb.zoneedit.com.
Escape character is '^]'.
^]
telnet> quit
Connection closed.
james@xr34lind2:~$
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/894194
Title:
can't access some internet servers after upgrading client to ubuntu
11.10
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