In my situation I've got for example the following; eth0 (root device) eth0.100 (vlan 100) eth0.1024 (vlan 1024)
To even get ISC to start, I have to assign a scope to the eth0 device. It refuses to use either VLAN interface as a valid interface. If I place a DHCP pool and an IP of 192.168.2.0/24 on the eth0 device, ISC will start. Creating pools for 192.168.3.0 and 192.168.4.0 on the VLANS is fine, however if a device on one of the VLAN's requests DHCP, you can see the request packets arrive on both eth0 and eth0.100 for instance, and it gets answered on eth0. If you don't give an IP to eth0, ISC will completely refuse to start saying there's no adapters, despite having static IP's on the eth0.100 and eth0.1024. You would expect the packets to arrive on the root device, but apparently ISC will only talk on the root device. I've confirmed that setting a static IP for a device on the VLAN works perfectly - sending it's packets in on the VLAN tagged virtual interface. It's just that ISC won't look on those interfaces for where to apply a scope. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu. https://bugs.launchpad.net/bugs/1167614 Title: DHCP server incorrectly handling VLAN tagged packets Status in isc-dhcp package in Ubuntu: Confirmed Status in Debian GNU/Linux: New Bug description: Upon receipt of a VLAN tagged packet, the DHCP server is processing it as though it was received without a VLAN tag. Steps to reproduce: - Send a DHCPDISCOVER packet to the broadcast address with a VLAN tag Expected results: - None. The DHCP server should ignore this packet. Actual results: - The DHCP server interprets the packet as though it were received untagged and transmits a response accordingly. Comments: - I believe this to be an instance of Debian bug #643564 ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: isc-dhcp-server 4.1.ESV-R4-0ubuntu5.6 ProcVersionSignature: Ubuntu 3.2.0-40.64-generic 3.2.40 Uname: Linux 3.2.0-40-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.1 Architecture: amd64 Date: Wed Apr 10 18:42:30 2013 MarkForUpload: True ProcEnviron: TERM=screen PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: isc-dhcp UpgradeStatus: Upgraded to precise on 2012-09-01 (221 days ago) modified.conffile..etc.dhcp.dhcpd.conf: [modified] mtime.conffile..etc.dhcp.dhcpd.conf: 2012-12-14T11:32:45 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1167614/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
