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
tcpdump: WARNING: eth0: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
8 O# P7 q$ p. G% [1 w) h/ Xlistening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
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
/ l! _7 B6 M+ O- N2 S, I% A! P19:03:28.112595 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
. \2 }+ J3 {& u* Y: H; c% H: _6 ~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
3 ~3 J; K6 \& I( P6 ~  G19:03:39.394177 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
  # ip netns
8 y  _  A3 T6 ?1 g5 kqdhcp-a7cca42b-eea0-45a7-9eee-243cb4cd43c1
qdhcp-3937d64e-7c2f-48c8-a50a-862dfb7d8371
qdhcp-d22b9bfc-3dd6-4a02-8e6c-4382d4384a97
qdhcp-a59997ca-e49e-4a20-8e06-2a80bf0569d7
9 i. N7 X) T' ][root@ontrolenode1 ~]# source admin-openrc.sh
[root@ontrolenode1 ~]# neutron net-list
6 c# @0 a( [5 ?" p; h- O+--------------------------------------+--------+----------------------------------------------------+
' {9 Z) a! x$ y6 c7 T. ^! a% M; R| id                                   | name   | subnets                                            |
$ l$ T, l+ |8 J7 p+--------------------------------------+--------+----------------------------------------------------+
| a7cca42b-eea0-45a7-9eee-243cb4cd43c1 | vlan3 | 7942e702-1b58-4e4e-b95f-652feb55ff5c 10.2.4.0/24 |
+--------------------------------------+--------+----------------------------------------------