6 ms·
the random address is changed regularly, typically daily, but the old random addresses are kept around for a fairly long time I don't understand this part. I h
by spindritf 12y ago
the random address is changed regularly, typically daily, but the old random addresses are kept around for a fairly long time
I don't understand this part. I have Ubuntu machines in a network which is technically /48 but only one /64 prefix is announced by radvd and they all have only two addresses, one derived from MAC and one private/random changing over time. They certainly never have eight.
Are those previous addresses not visable in ifconfig or ip -6 addr show?
- justincormack 12y agoI think this may have changed (in 14.04?) as I remember having more addresses in the past but don't now.
- spindritf 12y agoI have 14.04s and OP talks about 14.04s. Thus, a typical machine — say, an Ubuntu 14.04 workstation with the default configuration
- colmmacc 12y agoA significant factor is that privacy addresses won't be released if there are active connections using that address. So if the machine is running something with long lived connections; big downloads, push notifications, IM clients, ssh sessions and so on, then it can end up a growing stack of unreleased addresses. A typical admin who ssh's to a few boxes every so often, but then leaves those connections open in a tmux/screen/terminal-tab session can cause havoc.
- X-Istence 12y agoI haven't seen my Ubuntu servers use privacy addresses, however Ubuntu desktop does use privacy addresses, and I've seen my Ubuntu desktop grow more IPv6 privacy addresses over time on my local network. And they are visible in ifconfig or ip addr.