[BlueOnyx:11369] Re: 5108R IPv6 fun fact

[Gerald Waugh]

On 09/24/2012 07:59 AM, Chris Gebhardt - VIRTBIZ Internet wrote:
> Here's a neat tip.  If you are running an IPv6-enabled network, your
> 5108R server may decide to pick up an IPv6 IP address on its own via
> auto-configuration.  Sendmail may then use the IPv6 address to connect
> to other SMTP servers.  If you have not configured a PTR for that IPv6
> address, then the mail sent via IPv6 hosts will tend to bounce as it has
> no reverse DNS.
>
> We haven't seen this behavior on 5106R.
>
> Just thought I'd pass it along.  #LFMF
>
Yep some of mine have it.
[root at mail ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr D6:F7:C7:CC:13:6B
           inet addr:1.2.3.4  Bcast:1.2.2.4  Mask:255.255.255.0
*inet6 addr: 1234::1234:1234:1234:1234/64* Scope:Link


googling found this, I have used this previously for a similar issue.

|# vi /etc/sysconfig/network|
NETWORKING_IPV6=no
   IPV6INIT=no
Save and close the file.
Restart networking service
|# service network restart
   # rmmod ipv6|

-- 
Gerald
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