Public bug reported:
Binary package hint: bridge-utils
Configured bridge:
auto br8
iface br8 inet static
address 172.16.28.1
netmask 255.255.255.0
bridge_fd 9
bridge_hello 2
bridge_maxage 12
bridge_stp on
bridge_ports eth0.6
post-up iptables -t nat -A POSTROUTING -s 172.16.28.0/24 ! -d 172.16.28.0/24
-p tcp -j MASQUERADE --to-ports 1024-65535
post-up iptables -t nat -A POSTROUTING -s 172.16.28.0/24 ! -d 172.16.28.0/24
-p udp -j MASQUERADE --to-ports 1024-65535
post-up iptables -t nat -A POSTROUTING -s 172.16.28.0/24 ! -d 172.16.28.0/24
-j MASQUERADE
post-up iptables -t filter -A FORWARD -d 172.16.28.0/24 -o br8 -m state
--state RELATED,ESTABLISHED -j ACCEPT
post-up iptables -t filter -A FORWARD -s 172.16.28.0/24 -i br8 -j ACCEPT
post-up iptables -t filter -A FORWARD -i br8 -o br8 -j ACCEPT
post-up iptables -t filter -A FORWARD -o br8 -j REJECT --reject-with
icmp-port-unreachable
post-up iptables -t filter -A FORWARD -i br8 -j REJECT --reject-with
icmp-port-unreachable
Interface is configured as expected:
br8 Link encap:Ethernet Hardware Adresse 00:24:1d:df:f0:38
inet Adresse:172.16.28.1 Bcast:172.16.28.255 Maske:255.255.255.0
inet6-Adresse: fe80::224:1dff:fedf:f038/64
Gültigkeitsbereich:Verbindung
inet6-Adresse: 172.16.28.1/96 Gültigkeitsbereich:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metrik:1
RX packets:1990 errors:0 dropped:0 overruns:0 frame:0
TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
Kollisionen:0 Sendewarteschlangenlänge:0
RX bytes:365337 (365.3 KB) TX bytes:706 (706.0 B)
iptables are configured as expected:
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere 172.16.28.0/24 state
RELATED,ESTABLISHED
ACCEPT all -- 172.16.28.0/24 anywhere
ACCEPT all -- anywhere anywhere
REJECT all -- anywhere anywhere reject-with
icmp-port-unreachable
REJECT all -- anywhere anywhere reject-with
icmp-port-unreachable
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
This bridge connects two kvm-systems:
br8 8000.00241ddff038 yes eth0.6
vnet2
vnet9
System one:
eth4 Link encap:Ethernet HWaddr 52:54:00:ae:6c:73
inet addr:172.16.28.25 Bcast:172.16.28.255 Mask:255.255.255.0
inet6 addr: 172.16.28.25/96 Scope:Global
inet6 addr: fe80::5054:ff:feae:6c73/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:863 errors:0 dropped:0 overruns:0 frame:0
TX packets:107 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:69740 (69.7 KB) TX bytes:13207 (13.2 KB)
Interrupt:11 Base address:0x6200
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.16.28.0 0.0.0.0 255.255.255.0 U 0 0 0 eth4
On this system a dhcp-server is active. The server listens on port 67 on
all open interfaces.
System two:
eth0 Link encap:Ethernet HWaddr 52:54:00:ae:6c:73
inet6 addr: fe80::5054:ff:feae:6c73/64 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 KB) TX bytes:0 (0 KB)
Interrupt:11 Base address:0x6200
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
Command "dhclient eth0" just times out:
Listening on LPF/eth0/52:54:00:05:cf:85
Sending on LPF/eth0/52:54:00:05:cf:85
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 18
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 17
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
No DHCPOFFERS received.
No working leases in persistent database - sleeping
No dhcp-packets are seen by the client, nor the server. Impossible to use dhcp
with kvm.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: bridge-utils 1.4-5ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-23.41-server 2.6.35.7
Uname: Linux 2.6.35-23-server x86_64
Architecture: amd64
Date: Mon Dec 20 22:31:35 2010
InstallationMedia: Ubuntu-Server 10.10 "Maverick Meerkat" - Release amd64
(20101007)
ProcEnviron:
LC_CTYPE=en_US.UTF-8
PATH=(custom, no user)
LANG=de_DE.UTF-8
SHELL=/bin/bash
SourcePackage: bridge-utils
** Affects: bridge-utils (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug maverick
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https://bugs.launchpad.net/bugs/692775
Title:
linking two virtual machines does not work
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