[lwip-users] dhcp client maybe died!

[王洪涛]

Hello,all!
        I am working on redhat linux with lwip 0.7.2 and in unixsim example I 
want to use DHCP client function to obtain IP and GW within my local network. 
After updating lwipopt.h(define LWIP_DHCP 1) and adding dhcp.c to makefile,then 
I can build successfully.But using ifconfig command as follow:
address@hidden home]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:11:5B:56:B0:B1
          inet addr:192.168.18.95  Bcast:192.168.18.255  Mask:255.255.255.0
          inet6 addr: fe80::211:5bff:fe56:b0b1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5906 errors:0 dropped:0 overruns:0 frame:0
          TX packets:358 errors:0 dropped:0 overruns:0 carrier:0
          collisions:209 txqueuelen:1000
          RX bytes:700882 (684.4 Kb)  TX bytes:329982 (322.2 Kb)
          Interrupt:11 Base address:0xe800
 
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:967 errors:0 dropped:0 overruns:0 frame:0
          TX packets:967 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:84057 (82.0 Kb)  TX bytes:84057 (82.0 Kb)
 
ppp0      Link encap:Point-to-Point Protocol
          inet addr:192.168.1.1  P-t-P:192.168.1.2  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:3 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3
          RX bytes:72 (72.0 b)  TX bytes:78 (78.0 b)
 
tap0      Link encap:Ethernet  HWaddr 00:FF:8B:F3:5C:3D
          inet6 addr: fe80::2ff:8bff:fef3:5c3d/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:350 (350.0 b)  TX bytes:238 (238.0 b)
  

So i think tap0 can not obain IP address successfull,what i need to do?    
anyone can give me an example about dhcp client?


        

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　　　　　　　　致
礼！
 
                                 
　　　　　　　　王洪涛
address@hidden
　　　　　　　　　　2005-01-20