About this list Date view Thread view Subject view Author view Attachment view

From: Fernando Serto (fernando_at_serto.com.br)
Date: Tue 01 Jul 2003 - 08:09:01 BST

hi folks, it seems strange, but I can't open any connections from my vserver
to any other box on the LAN. even ping is not working... here goes the

fenestra is the root server, and cartman is the vserver i'm talking about:

[root_at_fenestra root]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:xx:xx:xx:xx:1C
          inet addr:61.x.x.3 Bcast:61.x.x.x Mask:

eth0:cart Link encap:Ethernet HWaddr 00:xx:xx:xx:xx:1C
          inet addr:61.x.x.101 Bcast:61.x.x.x Mask:

eth1 Link encap:Ethernet HWaddr 00:90:27:75:FC:66
          inet addr: Bcast: Mask:

eth1:cart Link encap:Ethernet HWaddr 00:90:27:75:FC:66
          inet addr: Bcast: Mask:

My cartman.conf file has the following configuration (just the networking
IPROOT="eth0: eth1:"

If I comment the IPROOTDEV line, it seems to not configure the interfaces...

while inside the vserver, I can ping the outside world:

[root_at_vserver:cartman /]ping www.telstra.com.au
PING www.telstra.com.au ( from 61.x.x.x: 56(84) bytes of data.
64 bytes from icmp_seq=1 ttl=248 time=71.9 ms
64 bytes from icmp_seq=2 ttl=248 time=123 ms
64 bytes from icmp_seq=3 ttl=248 time=163 ms

--- www.telstra.com.au ping statistics ---
3 packets transmitted, 3 received, 0% loss, time 2371ms
rtt min/avg/max/mdev = 71.963/119.879/163.855/37.618 ms

but, I can't ping my desktop on the LAN:

[root_at_vserver:cartman /]ping
PING ( from 61.x.x.x (WHY NOT THE INTERNAL
IP?): 56(84) bytes of data.

--- ping statistics ---
31 packets transmitted, 0 received, 100% loss, time 30018ms

here comes the "weirdest" part... While trying to ping my desktop, I started
tcpdump, and look what I got here:
[root_at_fenestra root]# tcpdump -i eth1 -n | grep
tcpdump: listening on eth1
16:58:32.585950 61.x.x.x > icmp: echo request (DF)
16:58:32.586143 > 61.8x.x.x : icmp: echo reply
16:58:33.603579 61.x.x.x > icmp: echo request (DF)
16:58:33.603701 > 61.x.x.x : icmp: echo reply

why the hell is it trying to connect using the external ip? is this the
my routing table looks like this:
[root_at_fenestra root]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
61.x.x.0 U 0 0 0 eth0 U 0 0 0 eth1 U 0 0 0 lo 61.x.x.1 UG 0 0 0 eth0

any ideas? I'm running a squid proxy on this vserver, but, I'll create
another vserver to use as our mail relay, just to hide the exchange, and
this "mail vserver" will have to forward the mails to the exchange server,
but how? If I can't even reach it?

from the root server:
[root_at_fenestra root]# telnet 25
Connected to
Escape character is '^]'.
220 HARRIS.localdomain ESMTP Server (Microsoft Exchange Internet Mail
Service 5.5.2656.59) ready

but, from the vserver:
[root_at_vserver:cartman /]telnet 25


About this list Date view Thread view Subject view Author view Attachment view
[Next/Previous Months] [Main vserver Project Homepage] [Howto Subscribe/Unsubscribe] [Paul Sladen's vserver stuff]
Generated on Tue 01 Jul 2003 - 08:27:03 BST by hypermail 2.1.3