Score:0

DHCPv6 address xxxx/128 timeout preferred 140 valid 450

cn flag

A couple of days ago, I activated the IPv6 for an EC2 instance. But, yesterday the instance was down twice.

When checking the syslog file, I found these repeated message:

ens5: DHCPv6 address xxxx/128 timeout preferred 140 valid 450

And while doing some research, I found this post, which simply says, the message is normal, but my question is is it?

Also, does it have anything to do with the server being down? I'm asking this because before I activated the IPv6, the instance had never been down, not even once.

I have a bit of network expertise, so any kind of clue on how to solve this will be much appreciated.

Score:0
ar flag

It is perfectly normal. It informs you that an ephemeral address is valid for 450 seconds, but will not be used for outgoing traffic after 140 seconds.

I sit in a Tesla and translated this thread with Ai:

mangohost

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