tcpdump抓包分析neutron获取IP地址失败报文

admin

[root@controlenode1 ~]# tcpdump -i eth0 -enn udp and port 67 or port 68
( E) E* h# |& c0 O" f8 _, `tcpdump: WARNING: eth0: no IPv4 address assigned
! k6 j6 h7 M( L- Qtcpdump: verbose output suppressed, use -v or -vv for full protocol decode
8 T" U! n& B- v) A9 Ulistening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
( a. j- _4 B' X% Q19:03:28.112577 fa:16:3e:64:fd:e9 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:64:fd:e9, length 300
% u! N6 _0 Y0 N+ v$ q19:03:28.112595 fa:16:3e:64:fd:e9 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:64:fd:e9, length 300
3 }+ f; U. z- U# C19:03:34.421355 fa:16:3e:2c:50:7f > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:2c:50:7f, length 300
19:03:34.421383 fa:16:3e:2c:50:7f > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:2c:50:7f, length 300
19:03:39.394142 fa:16:3e:64:fd:e9 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:64:fd:e9, length 300
19:03:39.394177 fa:16:3e:64:fd:e9 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:64:fd:e9, length 300
+ g& c4 v7 w( y1 O$ f, t 确定dns
  # ip netns
qdhcp-a7cca42b-eea0-45a7-9eee-243cb4cd43c1
qdhcp-3937d64e-7c2f-48c8-a50a-862dfb7d8371
/ w3 g* A& T6 `qdhcp-d22b9bfc-3dd6-4a02-8e6c-4382d4384a97
qdhcp-a59997ca-e49e-4a20-8e06-2a80bf0569d7
+ u. o  c8 Z6 N1 s; t[root@ontrolenode1 ~]# source admin-openrc.sh
: b8 S* U% n. u! a3 N[root@ontrolenode1 ~]# neutron net-list
+--------------------------------------+--------+----------------------------------------------------+
  g0 e; h0 L: L  l( e8 b2 P| id                                   | name   | subnets                                            |
+--------------------------------------+--------+----------------------------------------------------+
| a7cca42b-eea0-45a7-9eee-243cb4cd43c1 | vlan3 | 7942e702-1b58-4e4e-b95f-652feb55ff5c 10.2.4.0/24 |
$ @- P3 [- a3 e& r* E8 i+--------------------------------------+--------+----------------------------------------------
- I% J: a0 |. Y/ J  O