Re: Multi-user VNC on F23 and later

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On 07/10/2017 05:42 PM, CLOSE Dave wrote:
> On 07/10/17 17:32, Ed Greshko wrote:
> 
>> Odd that you're getting an IPV6 error message.  I don't have a global
>> IPv6 address and only show....
>>
>> [egreshko@f25f system]$ ip address show enp0s3
>> 2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group
>> default qlen 1000
>>     link/ether 08:00:27:15:6d:e0 brd ff:ff:ff:ff:ff:ff
>>     inet 192.168.1.198/24 brd 192.168.1.255 scope global dynamic enp0s3
>>        valid_lft 84207sec preferred_lft 84207sec
>>     inet6 fe80::a00:27ff:fe15:6de0/64 scope link
>>        valid_lft forever preferred_lft forever
> 
> Yes, I also found that strange. But the address shown is the right one
> per the output of ifconfig. I'm not intentionally running v6...

The IPV6 you're seeing is the IPV6 link-local Unicast representation
of your MAC address. All systems have that. It's part of IPV6's neighbor
discovery and stateless address configuration systems.

Link-local Unicast addresses can't be routed--they're only visible on
the link the NIC is attached to. You can sort of think of them as the
IPV6 equivalent of IPV4's "224.0.0.0" addresses, although they do more.
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