[问题求助][RedHat] tcpdump 我有两个光纤接口 我用 tcpdump -y fddi 出错 [复制链接]

如标题 我有两个光纤接口
我用 tcpdump -.y 有如下错误.
FDDI is not one of the DLTs supported b.y this de.vice.
是什么原因，改如何解决

光纤口是FDDI类型吗？

-y 参数吗意思？

其实我的问题是
用tcpdump -i eth1 -vnn 可以抓的到包。
但是我用tcpdump -i eth1 net 192.168.0.0/24 -vnn 抓不到包192.168.0.0是我的这边的网段，我看到link type 是 EN10MB (Ethernet)，我的是

[root@www ~]# lspci
00:00.0 Host bridge: Broadcom CMIC-HE (rev 22)
00:00.1 Host bridge: Broadcom CMIC-HE
00:00.2 Host bridge: Broadcom CMIC-HE
00:00.3 Host bridge: Broadcom CMIC-HE
00:02.0 System peripheral: Compaq Computer Corporation Integrated Lights Out Controller (rev
00:02.2 System peripheral: Compaq Computer Corporation Integrated Lights Out  Processor (rev
00:03.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
00:0f.0 ISA bridge: Broadcom CSB5 South Bridge (rev 93)
00:0f.1 IDE interface: Broadcom CSB5 IDE Controller (rev 93)
00:0f.2 USB Controller: Broadcom OSB4/CSB5 OHCI USB Controller (rev 05)
00:0f.3 Host bridge: Broadcom CSB5 LPC bridge
00:10.0 Host bridge: Broadcom CIOB30 (rev 03)
00:10.2 Host bridge: Broadcom CIOB30 (rev 03)
00:11.0 Host bridge: Broadcom CIOB30 (rev 03)
00:11.2 Host bridge: Broadcom CIOB30 (rev 03)
01:01.0 RAID bus controller: Compaq Computer Corporation Smart Array 5i/532 (rev 01)
02:1e.0 PCI Hot-plug controller: Compaq Computer Corporation PCI Hotplug Controller (rev 14)
06:01.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5701 Gigabit Ethernet (rev 15)
06:1e.0 PCI Hot-plug controller: Compaq Computer Corporation PCI Hotplug Controller (rev 14)
0a:01.0 Ethernet controller: Intel Corporation 82545GM Gigabit Ethernet Controller (rev 04)
0a:02.0 Ethernet controller: Intel Corporation 82545GM Gigabit Ethernet Controller (rev 04)

我猜测是不是这个原因不EN10MB类型说引起的。

我有是了是用其它的过滤参数就也抓不到包了，比如tcpdump -i eth1 port 80 -vnn or tcpdump -i eth1 tcp -vnn 都抓不到包，只能是， tcpdump -i eth1 -vnn有能看到包，真是奇怪呀。