People have set up a refresh cron job and have had the same IPv6 allocation for weeks to months:
*/5 * * * * root /sbin/rtsol WAN_INTERFACE

"I’m on 6 weeks with the same ipv6 block."

1)
   143.131.0.0/20 (ARIN)
    206.214.224.0/20 (ARIN)
    205.174.156.0/23 (ARIN)
    198.54.100.0/22 (ARIN)
    149.19.108.0/23 (ARIN)
    2605:59C0::/28 (ARIN)
    135.129.240.0/20 (ARIN)
    AS397763 (this ASN has never been seen on the Internet) [ARIN]
    2a0d:3340::/29 (RIPE)
    162.43.192.0/22 (RIPE)
    176.116.124.0/23 (RIPE)
    188.95.144.0/23 (RIPE)
    217.65.136.0/23 (RIPE)
    2406:2d40::/32 (APNIC)
    103.152.126.0/23 (APNIC)
    103.235.92.0/22 (APNIC)
    149.19.160.0/20 (LACNIC)
    2803:9810::/32 (LACNIC)
https://old.reddit.com/r/Starlink/comments/ioc4lc/starlink_internet_infrastructure/ <-- i keep this up to date

2) not sure

On Fri, Jun 11, 2021 at 6:52 AM Dave Taht <davet@teklibre.net> wrote:
I am of course happy that with a real OS (linux/pfsense/openwrt) in front of the dishy that an dhcpv6-pd ipv6/56 can be had.

… frustrated that the lease time is only 5 minutes and changes sometimes in under 24 hrs. Most OSes still don’t handle an ipv6 retraction all that well, and only apps like “mosh” can stay nailed up when the underlying ips change.

while we’ve had ipv6 “source specific routing" and “bcp38" working in openwrt for 7+ years now, I doubt that’s working anywhere else.

I got two questions:

1) How much ipv4 address space does starlink actually have? (and how tight is the market nowadays?)

2) how often does the external ipv4 address change?
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