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
) g+ e9 p# [: b$ atcpdump: WARNING: eth0: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
& g4 B2 G* s2 @! ?5 X  M( _listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
; I0 [- j6 \/ w4 b# f% s19:03:28.112577 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
" _/ ]: P  e% p+ t1 @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
) \1 A; M9 T9 J6 V19:03:34.421383 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
确定dns
' ?* O  Y2 m- R& \" A8 e  # ip netns
qdhcp-a7cca42b-eea0-45a7-9eee-243cb4cd43c1
$ W/ b$ i, S7 r; `6 \, g8 I6 }qdhcp-3937d64e-7c2f-48c8-a50a-862dfb7d8371
, O7 w! g9 k% z* Tqdhcp-d22b9bfc-3dd6-4a02-8e6c-4382d4384a97
% a7 F5 {6 c. `9 ]% f6 [9 a. e' lqdhcp-a59997ca-e49e-4a20-8e06-2a80bf0569d7
[root@ontrolenode1 ~]# source admin-openrc.sh
/ u, c& h! {" y  R9 w2 I$ \[root@ontrolenode1 ~]# neutron net-list
& ~/ l2 ~& g1 \& A+--------------------------------------+--------+----------------------------------------------------+
: e+ h- B! A% r0 \0 u| id                                   | name   | subnets                                            |
+--------------------------------------+--------+----------------------------------------------------+
| a7cca42b-eea0-45a7-9eee-243cb4cd43c1 | vlan3 | 7942e702-1b58-4e4e-b95f-652feb55ff5c 10.2.4.0/24 |
' G/ z) G- E: T+--------------------------------------+--------+----------------------------------------------
* l& V% B( P6 |3 E0 W( c+ o