Hi,

Does anyone know how to configure pure IPv6 environment on RHEL4 AS UP1? In the /etc/sysconfig/networking/profiles/default/ifcfg-eth0 file, I've set parameters as follow:

IPV6INIT=yes
ONBOOT=yes
USERCTL=no
PEERDNS=yes
GATEWAY=fe80::250:daff:fe63:c358
TYPE=Ethernet
DEVICE=eth0
HWADDR=00:0c:29:a1:1a:20
BOOTPROTO=none
NETMAS=0.0.0.0
IPADDR=0.0.0.0

With these setting, I cannot ping any machines outside of the gateway (I can ping devices within the gateway w/ipv6 addr). I read an article stating that Linux uses IPv4 address to communicate with other host machines even though IPv6 is enabled. If this true, IPv6 only environment cannot be done with RHEL4?

Any inputs would be appreciated.
Thanks in advance.

Many, many Internet providers and sites are still only IPv4, perhaps this is why you cannot ping any machines outside of the gateway??? Check with your provider.

Hi Lenard,

Thanks for your reply.
Actually, I've setup IPv4/IPv6 lab environment and this machine belongs in this environment. With dual stack (IPv4/IPv6) configuration, I can ping machines beyond the gateway with their IPv6 addresses. Once IPv4 address is disabled (? or set to 0.0.0.0), it can no longer ping those machines. I know Windows Vista supports IPv6 only configuration. Does RHEL4 or SLES support this? Has anyone configured this before?

Thank you in advance.

Yes Linux does support IPv6 only networking, all it takes is disabling IPv4 in similar fashion as disabling IPv6. It takes slightly more work then what you have done so far.

Some starter pages for review:

http://wiki.suselinuxsupport.de/wikk...ilessysctlconf

http://www.bieringer.de/linux/IPv6/I...6-HOWTO-6.html