I use CentOS6.2 as Server and I solve this problem by : iptables -A POSTROUTING -t mangle -p udp --dport bootpc -j CHECKSUM --checksum-fill
from http://www.mail-archive.com/kvm@vger.kernel.org/msg41958.html It looks like a bug for centos Thanks ---------- Forwarded message ---------- From: William Herry <william.herry.ch...@gmail.com> Date: Mon, Jun 4, 2012 at 12:52 PM Subject: [Openstack] lease ip problem with ubuntu To: Openstack <openstack@lists.launchpad.net> My ubuntu instance can't get leased IP address, CentOS instance image is OK with that I boot up ubuntu instance and run dhclient eth0 manually, I can see packages from server side, I don't know why ubuntu can't get address : 12:44:11.973930 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from fa:16:3e:74:22:48 (oui Unknown), length 300 12:44:11.974184 IP 10.0.1.3.bootps > 10.0.1.15.bootpc: BOOTP/DHCP, Reply, length 300 In guest ubuntu's syslog I find: 5 bad udp checksums in packets I am thinking if it is related with my bridge settings, cause I have a two internal network(10.0.0.0/24, 10.0.1.0/24) bonding to the same interface(em2) What step should do to finger out what's going on? -- William Herry ==================== williamherrych...@gmail.com -- William Herry ==================== williamherrych...@gmail.com
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