Hello all,
My name is Tuan H. Nguyen.  I am working for Navy research lab at San 
Diego CA.
I have two IPV6 linux systems (kernel 2.4.2) with 3 network interfaces: 
eth0, eth1, and hdlc0(cyclades pc300 sync serial card) .  Both system 
are identical.
But there are only the ethernet (eth0 & eth1)working OK with IPv4/ipv6
(I can ping6 each other), except the serial (hdlc0) is not working with 
IPV6(ipv4 OK). Does anyone know to configure the hdlc0 interface(PPP) 
on linux to make serial (PPP) work with ipv6? Is it the ipv6 over ppp 
implemented yet? The following is my system configuration:

[root@821dhcp092 thtran]# /sbin/ifconfig
eth0      Link encap:Ethernet  HWaddr 00:60:97:4F:AB:36
          inet addr:128.49.140.92 Bcast:128.49.140.255 
Mask:255.255.255.0
          inet6 addr: fe80::260:97ff:fe4f:ab36/10 Scope:Link
          inet6 addr: 4080::260:97ff:fe4f:ab36/10 Scope:Global
          UP BROADCAST RUNNING MULTICAST  MTU:1500 Metric:1
          RX packets:18375 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1712 errors:0 dropped:0 overruns:0 carrier:3
          collisions:86 txqueuelen:100
          Interrupt:9 Base address:0xd400
 
eth1      Link encap:Ethernet  HWaddr 00:E0:18:1E:0D:B3
          inet addr:128.49.214.200  Bcast:128.49.214.255  
Mask:255.255.255.0
          inet6 addr: 5080::2e0:18ff:fe1e:db3/10 Scopte:Global
          inet6 addr: fe80::2e0:18ff:fe1e:db3/10 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          Interrupt:9
 
hdlc0     Link encap:Point-to-Point Protocol
          inet addr:205.53.10.2  P-t-P:205.53.10.1 Mask:255.255.255.252
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:648 errors:0 dropped:0 overruns:0 frame:0
          TX packets:669 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:10
          Interrupt:9 Memory:eb000000-eb03ffff
 
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:3856  Metric:1
          RX packets:90 errors:0 dropped:0 overruns:0 frame:0
          TX packets:90 errors:0 Hello all,

I have tried to use ifconfig to add ipv6 addresses for hdlc0 such as:
#ifconfig hdlc0 add 7080::260:97ff:fe4f:ab11/10
#ifconfig hdlc0 add fe80::260:97ff:fe4f:ab11/10

The hdlc0 looked like:
hdlc0    Link encap:Point-to-Point Protocol
         inet addr:205.53.10.2  P-t-P:205.53.10.1 Mask:255.255.255.252
         inet6 addr: 7080::260:97ff:fe4f:ab11/10 Scope:Global
         inet6 addr: fe80::260:97ff:fe4f:ab11/10 Scope:Link
         UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:648 errors:0 dropped:0 overruns:0 frame:0
          TX packets:669 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:10
          Interrupt:9 Memory:eb000000-eb03ffff

But it does not work either.
I need your help.
Thanks.

/Tuan Nguyen



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