Bug 243232
Summary: | Multicast traffic from DomU virt interface to Dom0 virt interface gets dumped | ||
---|---|---|---|
Product: | Red Hat Enterprise Linux 5 | Reporter: | Kyle Gonzales <kgonzale> |
Component: | xen | Assignee: | Herbert Xu <herbert.xu> |
Status: | CLOSED INSUFFICIENT_DATA | QA Contact: | |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | 5.0 | CC: | clalance, degts, k.georgiou, sputhenp, xen-maint |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | i686 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2009-10-22 15:03:03 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Kyle Gonzales
2007-06-08 04:06:55 UTC
Have we integrated this patch into our Xen code base? http://lists.xensource.com/archives/html/xen-devel/2006-05/msg00062.html Might be the problem... Please provide complete dom0 networking config, not simply an edited highlight, eg ifconfig -a. Also provide iptables -L -n -v output As requested: # iptables -L -n -v 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 # ifconfig -a demobr0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:639 errors:0 dropped:0 overruns:0 frame:0 TX packets:17 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:93676 (91.4 KiB) TX bytes:4381 (4.2 KiB) dummy0 Link encap:Ethernet HWaddr 5E:9F:84:10:14:27 BROADCAST NOARP 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) eth1 Link encap:Ethernet HWaddr 00:15:58:86:78:3E inet addr:10.15.69.58 Bcast:10.15.69.255 Mask:255.255.255.0 inet6 addr: fe80::215:58ff:fe86:783e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3157 errors:0 dropped:0 overruns:0 frame:0 TX packets:1161 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1752322 (1.6 MiB) TX bytes:191493 (187.0 KiB) 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:2546 errors:0 dropped:0 overruns:0 frame:0 TX packets:2546 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:3627773 (3.4 MiB) TX bytes:3627773 (3.4 MiB) peth1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:3591 errors:0 dropped:0 overruns:0 frame:0 TX packets:1286 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1811966 (1.7 MiB) TX bytes:219225 (214.0 KiB) Base address:0x2000 Memory:ee000000-ee020000 sit0 Link encap:IPv6-in-IPv4 NOARP MTU:1480 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) tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.11.14.220 P-t-P:10.11.14.220 Mask:255.255.255.0 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1412 Metric:1 RX packets:1328 errors:0 dropped:0 overruns:0 frame:0 TX packets:916 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:1397053 (1.3 MiB) TX bytes:82869 (80.9 KiB) veth1 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:172.31.200.254 Bcast:172.31.200.255 Mask:255.255.255.0 inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:655 errors:0 dropped:0 overruns:0 frame:0 TX packets:27 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:106933 (104.4 KiB) TX bytes:7618 (7.4 KiB) veth2 Link encap:Ethernet HWaddr 00:00:00:00:00:00 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) veth3 Link encap:Ethernet HWaddr 00:00:00:00:00:00 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) vif0.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:1161 errors:0 dropped:0 overruns:0 frame:0 TX packets:3157 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:191493 (187.0 KiB) TX bytes:1752322 (1.6 MiB) vif0.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:27 errors:0 dropped:0 overruns:0 frame:0 TX packets:655 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:7618 (7.4 KiB) TX bytes:106933 (104.4 KiB) vif0.2 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF 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) vif0.3 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF 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) vif1.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:1521 errors:0 dropped:0 overruns:0 frame:0 TX packets:1099 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:32 RX bytes:219062 (213.9 KiB) TX bytes:175493 (171.3 KiB) vif2.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:1131 errors:0 dropped:0 overruns:0 frame:0 TX packets:1472 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:32 RX bytes:162891 (159.0 KiB) TX bytes:234600 (229.1 KiB) xenbr0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:1691 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:150284 (146.7 KiB) TX bytes:0 (0.0 b) # brctl show bridge name bridge id STP enabled interfaces demobr0 8000.feffffffffff no vif0.1 vif3.0 vif2.0 vif1.0 xenbr0 8000.feffffffffff no peth1 vif0.0 As requested, I retested without the netloop module being loaded: [root@predator ~]# lsmod | grep netloop [root@predator ~]# [root@predator ~]# ifconfig -a | grep veth [root@predator ~]# I then manually configured xenbr0 as both the bridge device and an interface: [root@predator ~]# brctl show bridge name bridge id STP enabled interfaces xenbr0 8000.feffffffffff no vif3.0 vif2.0 vif1.0 [root@predator ~]# ifconfig xenbr0 xenbr0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet addr:172.31.200.254 Bcast:172.31.200.255 Mask:255.255.255.0 inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1952054 errors:0 dropped:0 overruns:0 frame:0 TX packets:136546 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:3809406254 (3.5 GiB) TX bytes:10307818 (9.8 MiB) I did not manually set the MULTICAST flag on xenbr0, the system did that on its own. I brought my three virtual machines, and I can log into them from my laptop (Dom0) via xenbr0. I then redid my nuttcp test. I can send TCP and UDP unicast traffic from a DomU to Dom0, but multicast traffic gets dropped. I also retested, and all traffic types work from one DomU to another DomU. That being said... xenbr0 has one of the "bogus" MAC addresses that you said we were not to use. Is this still going to be a problem with multicast? If I was then going to not use xenbr0 due to this bogus MAC address, what do I do? Do I give xenbr0 a real MAC address? It seems that this thread has gone off into the emails and therefore we've lost track of it. Here's a what we've talked about: Please either use a proper eth0 + netloop (i.e., something that doesn't throw packets away like dummy) or not use netloop at all. For the latter please use the scripts from rawhide which no longer creates netloop devices. Thanks, Yikes, this one has been in needinfo for 2 years. Kyle, is this still a problem, or can we close this out? Or should we document something here? Chris Lalancette No response from reporter for a long time, so closing this out. Feel free to reopen if you hit this problem again. Chris Lalancette This bug was closed during 5.5 development and it's being removed from the internal tracking bugs (which are now for 5.6). |