请教网卡的问题

richards

环境:skyeye + uClinux

linux下ping uClinux 可以ping通
但uClinux下ping linux就ping不通

网卡情况如下：

linux 下:
eth0      Link encap:Ethernet  HWaddr 00:10:5C:DA:CD:CD  
          inet addr:10.42.86.28  Bcast:10.42.87.255  Mask:255.255.248.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:426426723 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2314698 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:2006277691 (1913.3 Mb)  TX bytes:263723032 (251.5 Mb)
          Interrupt:11 Base address:0x5000

tap0      Link encap:Ethernet  HWaddr 00:FF:BF:32:1F:3F  
          inet addr:192.80.91.243  Bcast:192.80.91.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:9 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:5310 (5.1 Kb)  TX bytes:0 (0.0 b)

skyeye.conf
net: state=on, mac=0:4:3:2:1:f, ethmod=tuntap, hostip=192.80.91.243

chyyuu

maybe you have some firewall in your host linux