Am 08.01.2024 um 13:01:38 Uhr schrieb Andreas B: > I haven't checked thoroughly (yet), but the only immediate difference > I can see, is that the router lifetime is 600 seconds (RA). My ISP's > router used a lifetime of 86400 seconds (24h), I think. That affect when the old addresses must be removed from the interface. Check valid_lft 582619sec preferred_lft 63918sec in ip a for each address.