[BlueOnyx:11383] Re: 5108R IPv6 fun fact

[Stephanie Sullivan]

Gerald,

We did this month's ago. The thinking is the BX gui does not allow for IPV6
so we don't want to allow it. Haven't regretted it a minute so far.
Eventually we'll need to support IPV6 as well as IPV4.

If any of you remember back long enough I was a project lead at Digital in
DECnet engineering during the period of transition of DECnet Phase IV to
Phase V (OSI networking). The part I worked on mostly was the backward
compatibility part. The IPV6 conversion has a stong sense of "Deja Vu all
over again" to me, but on a much bigger scale. Not pretty and older DECnet
Phase IV continued to be supported until the end.

	Thanks,
		-Stephanie

From: Gerald Waugh [mailto:gwaugh at frontstreetnetworks.com] 
Sent: Monday, September 24, 2012 9:45 AM
To: BlueOnyx General Mailing List
Subject: [BlueOnyx:11369] Re: 5108R IPv6 fun fact

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