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Re: [Xen-users] Unable to ping guest hostname

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Stephen Liu <satimis@xxxxxxxxx>
  • Date: Wed, 17 Sep 2008 21:04:58 +0800 (CST)
  • Delivery-date: Wed, 17 Sep 2008 06:05:43 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>
--- "Nemeth, Tamas" <nice@xxxxxxxxxxxxxxx> wrote:

> So, here are the commands again:
> 
> brctl show
> ip route show
> ip address show
> cat /etc/resolv.conf
> for i in /proc/sys/net/bridge/* ; do echo "$i $(<$i)" ; done
> iptables -t filter -L -nv


Hi Nemeth,


Here again


Host
====

# brctl show
bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.feffffffffff       no              vif0.0
                                                        peth0
                                                        vif1.0
                                                        vif2.0
                                                        vif3.0
                                                        vif4.0


# ip route show
192.168.0.0/24 dev eth0  proto kernel  scope link  src 192.168.0.110
default via 192.168.0.1 dev eth0
server1:/home/satimis# ip address show
1: lo: <LOOPBACK,UP,10000> mtu 16436 qdisc noqueue
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: vif0.0: <BROADCAST,NOARP,UP,10000> mtu 1500 qdisc noqueue
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fcff:ffff:feff:ffff/64 scope link
       valid_lft forever preferred_lft forever
3: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc noqueue
    link/ether 00:0e:a6:f9:a3:5b brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.110/24 brd 192.168.0.255 scope global eth0
    inet6 fe80::20e:a6ff:fef9:a35b/64 scope link
       valid_lft forever preferred_lft forever
4: vif0.1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
5: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
6: vif0.2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
7: veth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
8: vif0.3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
9: veth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
10: peth0: <BROADCAST,NOARP,UP,10000> mtu 1500 qdisc pfifo_fast qlen
1000
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fcff:ffff:feff:ffff/64 scope link
       valid_lft forever preferred_lft forever
11: sit0: <NOARP> mtu 1480 qdisc noop
    link/sit 0.0.0.0 brd 0.0.0.0
12: xenbr0: <BROADCAST,NOARP,UP,10000> mtu 1500 qdisc noqueue
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
13: vif1.0: <BROADCAST,NOARP,UP,10000> mtu 1500 qdisc pfifo_fast qlen
32
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fcff:ffff:feff:ffff/64 scope link
       valid_lft forever preferred_lft forever
14: vif2.0: <BROADCAST,NOARP,UP,10000> mtu 1500 qdisc pfifo_fast qlen
32
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fcff:ffff:feff:ffff/64 scope link
       valid_lft forever preferred_lft forever
15: vif3.0: <BROADCAST,NOARP,UP,10000> mtu 1500 qdisc pfifo_fast qlen
32
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fcff:ffff:feff:ffff/64 scope link
       valid_lft forever preferred_lft forever
16: vif4.0: <BROADCAST,NOARP,UP,10000> mtu 1500 qdisc pfifo_fast qlen
32
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fcff:ffff:feff:ffff/64 scope link
       valid_lft forever preferred_lft forever


# cat /etc/resolv.conf
# generated by NetworkManager, do not edit!

nameserver 202.14.67.14
nameserver 192.168.0.1
nameserver 192.168.0.110
nameserver 192.168.0.111
nameserver 192.168.0.112
nameserver 192.168.0.113


# for i in /proc/sys/net/bridge/* ; do echo "$i $(<$i)" ; done
/proc/sys/net/bridge/bridge-nf-call-arptables 1
/proc/sys/net/bridge/bridge-nf-call-ip6tables 1
/proc/sys/net/bridge/bridge-nf-call-iptables 1
/proc/sys/net/bridge/bridge-nf-filter-vlan-tagged 1


# iptables -t filter -L -nv
Chain INPUT (policy ACCEPT 1376 packets, 1616K bytes)
 pkts bytes target     prot opt in     out     source              
destination

Chain FORWARD (policy ACCEPT 2596 packets, 1748K bytes)
 pkts bytes target     prot opt in     out     source              
destination
    0     0 ACCEPT     0    --  *      *       192.168.0.111       
0.0.0.0/0           PHYSDEV match --physdev-in vif1.0
    0     0 ACCEPT     udp  --  *      *       0.0.0.0/0           
0.0.0.0/0           PHYSDEV match --physdev-in vif1.0 udp spt:68 dpt:67
    0     0 ACCEPT     0    --  *      *       192.168.0.112       
0.0.0.0/0           PHYSDEV match --physdev-in vif2.0
    0     0 ACCEPT     udp  --  *      *       0.0.0.0/0           
0.0.0.0/0           PHYSDEV match --physdev-in vif2.0 udp spt:68 dpt:67
    0     0 ACCEPT     0    --  *      *       192.168.0.113       
0.0.0.0/0           PHYSDEV match --physdev-in vif3.0
    0     0 ACCEPT     udp  --  *      *       0.0.0.0/0           
0.0.0.0/0           PHYSDEV match --physdev-in vif3.0 udp spt:68 dpt:67
    0     0 ACCEPT     0    --  *      *       192.168.0.114       
0.0.0.0/0           PHYSDEV match --physdev-in vif4.0
    0     0 ACCEPT     udp  --  *      *       0.0.0.0/0           
0.0.0.0/0           PHYSDEV match --physdev-in vif4.0 udp spt:68 dpt:67

Chain OUTPUT (policy ACCEPT 1189 packets, 130K bytes)
 pkts bytes target     prot opt in     out     source              
destination



Original Guest
==============

# brctl show
bridge name     bridge id               STP enabled     interfaces


# ip route show
192.168.0.0/24 dev eth0  proto kernel  scope link  src 192.168.0.112
default via 192.168.0.1 dev eth0


# ip address show
1: lo: <LOOPBACK,UP,10000> mtu 16436 qdisc noqueue
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen
1000
    link/ether 00:16:3e:41:39:04 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.112/24 brd 192.168.0.255 scope global eth0
    inet6 fe80::216:3eff:fe41:3904/64 scope link
       valid_lft forever preferred_lft forever
3: sit0: <NOARP> mtu 1480 qdisc noop
    link/sit 0.0.0.0 brd 0.0.0.0


# cat /etc/resolv.conf
# generated by NetworkManager, do not edit!
nameserver 202.14.67.14
nameserver 192.168.0.1


# for i in /proc/sys/net/bridge/* ; do echo "$i $(<$i)" ; done
/proc/sys/net/bridge/bridge-nf-call-arptables 1
/proc/sys/net/bridge/bridge-nf-call-ip6tables 1
/proc/sys/net/bridge/bridge-nf-call-iptables 1
/proc/sys/net/bridge/bridge-nf-filter-vlan-tagged 1


# iptables -t filter -L -nv
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source              
destination

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source              
destination

Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source              
destination



Cloned Guest
============

# brctl show
bridge name     bridge id               STP enabled     interfaces


# ip route show
192.168.0.0/24 dev eth0  proto kernel  scope link  src 192.168.0.113
default via 192.168.0.1 dev eth0


# ip address show
1: lo: <LOOPBACK,UP,10000> mtu 16436 qdisc noqueue
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen
1000
    link/ether 00:16:3e:53:a9:68 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.113/24 brd 192.168.0.255 scope global eth0
    inet6 fe80::216:3eff:fe53:a968/64 scope link
       valid_lft forever preferred_lft forever
3: sit0: <NOARP> mtu 1480 qdisc noop
    link/sit 0.0.0.0 brd 0.0.0.0


# cat /etc/resolv.conf
# generated by NetworkManager, do not edit!
nameserver 202.14.67.14
nameserver 192.168.0.1
nameserver 192.168.0.2
nameserver 192.168.0.3


# for i in /proc/sys/net/bridge/* ; do echo "$i $(<$i)" ; done
/proc/sys/net/bridge/bridge-nf-call-arptables 1
/proc/sys/net/bridge/bridge-nf-call-ip6tables 1
/proc/sys/net/bridge/bridge-nf-call-iptables 1
/proc/sys/net/bridge/bridge-nf-filter-vlan-tagged 1


# iptables -t filter -L -nv
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source              
destination

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source              
destination

Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source              
destination



B.R.
Stephen L

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