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
$ W) ]4 U( j9 J: Jtcpdump: WARNING: eth0: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
* U; k! b0 W( [6 E0 a6 Qlistening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
8 E# w" |- [1 E# q- }% [19:03:28.112577 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
19:03:28.112595 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
19:03:34.421355 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
3 Q3 N  h( @$ k9 {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
% C, j4 v% Y  [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
8 C6 b* D( ?: R 确定dns
" T- d/ r% v2 y& {7 o9 K  @  # ip netns
qdhcp-a7cca42b-eea0-45a7-9eee-243cb4cd43c1
qdhcp-3937d64e-7c2f-48c8-a50a-862dfb7d8371
; u* K; C0 w7 `) W7 [+ q: X% E( xqdhcp-d22b9bfc-3dd6-4a02-8e6c-4382d4384a97
qdhcp-a59997ca-e49e-4a20-8e06-2a80bf0569d7
; ^# |; g8 `; g$ I# J+ j3 R* i5 ?: l- ]% R[root@ontrolenode1 ~]# source admin-openrc.sh
[root@ontrolenode1 ~]# neutron net-list
0 J0 M& @* f+ A( \* M- K+--------------------------------------+--------+----------------------------------------------------+
* |" t0 C4 F! }; N| id                                   | name   | subnets                                            |
+ D3 T0 G$ A" {6 A2 ]+--------------------------------------+--------+----------------------------------------------------+
| a7cca42b-eea0-45a7-9eee-243cb4cd43c1 | vlan3 | 7942e702-1b58-4e4e-b95f-652feb55ff5c 10.2.4.0/24 |
+--------------------------------------+--------+----------------------------------------------