Bug 839262
| Summary: | dhcp doesn't work on tagged vlan interfaces of atl1e adapter | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Rudd-O DragonFear <rudd-o> |
| Component: | kernel | Assignee: | Neil Horman <nhorman> |
| Status: | CLOSED INSUFFICIENT_DATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 17 | CC: | gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, nhorman |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-05-06 10:47:35 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Rudd-O DragonFear
2012-07-11 12:00:18 UTC
Your bug tracker eats bug reports with unicode characters. Not cool. This is the 21st century. Reposting: Description of problem: dhclient eth0.103 fails to get a response, even though tcpdump -e -i eth0 shows the request and response on the wire. FYI tcpdump -e -i eth0.103 only shows fhe request. So the vlan tagged reply packet is being swallowed somewhere by the kernel. It used to work in kernel 2.6.35, but it ceased working afterwards. Version-Release number of selected component (if applicable): /home/rudd-o: uname -r 3.3.7-1.fc17.x86_64 How reproducible: Always Steps to Reproduce: 1. create tagged vlan interface 2. connect to tagged vlan port 3. assign static ip address 4. attempt to ping other host in the same vlan 5. verify that ping works fine 6. now run dhclient on the tagged vlan interface, while running a dhcp server serving dhcp addresses on the same vlan 7. observe how dhclient never gets a reply Actual results: dhclient does not get an address Expected results: dhclient gets an address Additional info: /home/rudd-o: ethtool -k eth0 Offload parameters for eth0: rx-checksumming: off tx-checksumming: on scatter-gather: on tcp-segmentation-offload: on udp-fragmentation-offload: off generic-segmentation-offload: on generic-receive-offload: on large-receive-offload: off rx-vlan-offload: on tx-vlan-offload: on ntuple-filters: off receive-hashing: off what's worse: disabling rxvlan on the network card (a debugging step I took) reliably causes it to stop sending traffic altogether. May be related to this bug: https://bugzilla.redhat.com/show_bug.cgi?id=699083 tcpdumps proving the facts I mentioned above: ---------------------------- tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0.103, link-type EN10MB (Ethernet), capture size 65535 bytes 04:43:20.254394 90:e6:ba:c8:a5:a9 (oui Unknown) > Broadcast, ethertype IPv4 (0x0800), length 342: 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 90:e6:ba:c8:a5:a9 (oui Unknown), length 300 ---------------------------- tcpdump 'port 67 or port 68' -e -i eth0 tcpdump: WARNING: eth0: no IPv4 address assigned tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes 04:36:58.131601 90:e6:ba:c8:a5:a9 (oui Unknown) > Broadcast, ethertype 802.1Q (0x8100), length 346: vlan 103, p 0, ethertype IPv4, 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 90:e6:ba:c8:a5:a9 (oui Unknown), length 300 04:36:58.149582 98:2c:be:4e:e5:c9 (oui Unknown) > Broadcast, ethertype 802.1Q (0x8100), length 346: vlan 103, p 0, ethertype IPv4, homeportal.bootps > 255.255.255.255.bootpc: BOOTP/DHCP, Reply, length 300 More info:
/home/rudd-o:
ifconfig eth0.103
eth0.103: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.253 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::92e6:baff:fec8:a5a9 prefixlen 64 scopeid 0x20<link>
ether 90:e6:ba:c8:a5:a9 txqueuelen 0 (Ethernet)
RX packets 9658 bytes 5041744 (4.8 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 9683 bytes 3226463 (3.0 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
0 <- ifconfig eth0.103
/home/rudd-o:
ifconfig eth0.102
eth0.102: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::92e6:baff:fec8:a5a9 prefixlen 64 scopeid 0x20<link>
ether 90:e6:ba:c8:a5:a9 txqueuelen 0 (Ethernet)
RX packets 11375 bytes 3249110 (3.0 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 10753 bytes 4479535 (4.2 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
0 <- ifconfig eth0.102
/home/rudd-o:
brctl show br0
bridge name bridge id STP enabled interfaces
br0 8000.90e6bac8a5a9 no eth0.102
tun0
May be related: http://kerneltrap.org/mailarchive/linux-netdev/2010/1/21/6267138 You're honestly better off trying the 3.4.4-5 kernel, or 3.5-rc6 from rawhide and if this still happens reporting it directly to the netdev mailing list. They will be in a much better position to help you. Is this still happening for you? If so, can you run dropwatch while you attempt to preform a dhcp and send in the output I ditched F17 vlan use. Cannot repro anymore. |