IPv6 Setup...

[Eric Crist]

On Jun 23, 2007, at 7:17 AMJun 23, 2007, Tilman Linneweh wrote:

>
> On Jun 23, 2007, at 04:36 , Eric Crist wrote:
>> I have 5 servers on my quaint little network, and my primary  
>> firewall is configured with an IPv6 address, we'll say  
>> 1000:2000:1::6 and is connected to my ISP through a gif tunnel  
>> (router doesn't support IPv6 yet, on my end) to 1000:2000:1::5.  I  
>> can ping6 all day long across this tunnel, and I can even connect  
>> through this firewall to other sites using the IPv6 addresses.
>>
>> I've been given 2001:4900:1:0111::/64 for my use.  I've  
>> configured /etc/rc.conf on my first two machines with  
>> ipv6_enable="YES" and given them 2001:4980:1:0111::1 and  
>> 2001:4980:1:0111::2.  Each machine can ping6 itself, but they  
>> cannot ping6 eachother.  I know the copper is good, and my ipv6 is  
>> running along side my ipv4 addresses and such.  In addition, there  
>> are no firewalls in between.
>>
>> Is there something I'm missing?
>
> Maybe you used a /128 netmask, or a wrong routing table? Try  
> sniffing with tcpdump/wireshark to see what is going on.
>
>>
>> Also, what the heck is rtadvd_enable="YES" actually doing for me?   
>> I understand it's broadcasting some routing stuff so my other  
>> hosts can auto-configure their IPv6 addresses, but anything else?
>>
>
> There is a section in the handbook about ipv6:
>  http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/network- 
> ipv6.html
>

Something I've just learned is that autoconfiguration of IPv6 *is*  
working to my ipv6 gateway.  I can ping between machines using their  
autoconfiguration addresses, however, I cannot ping statically  
assigned addresses.  Also, it appears that all of my servers, those  
set to autoconf and those note, have 2001:4900:1:111::1 assigned to  
their loopback address.  Is this normal?  The route on a host looks  
like:

Internet6:
Destination        Gateway            Flags      Netif Expire
::                 localhost.secure-c UGRS        lo0
localhost.secure-c localhost.secure-c UHL         lo0
::ffff:0.0.0.0     localhost.secure-c UGRS        lo0
2001:4900:1:111::  link#1             UC          sk0
2001:4900:1:111::1 my:ma:ca:dd:re:ss  UHL         lo0
2001:4900:1:111:20 ma:ca:dd:re:ss:02  UHLW        sk0
fe80::             localhost.secure-c UGRS        lo0
fe80::%sk0         link#1             UC          sk0
fe80::212:17ff:fe4 my:mc:ca:dd:re:ss  UHL         lo0
fe80::%lo0         fe80::1%lo0        U           lo0
fe80::1%lo0        link#4             UHL         lo0
ff01:1::           link#1             UC          sk0
ff01:4::           localhost.secure-c UC          lo0
ff02::             localhost.secure-c UGRS        lo0
ff02::%sk0         link#1             UC          sk0
ff02::%lo0         localhost.secure-c UC          lo0