Hi, in the log <debug> [1538019154.6638] policy: ipv6-pd: enp5s0 needs a subnet <info> [1538019154.6638] policy: ipv6-pd: no device to obtain a subnet to share on enp5s0 from ... <info> [1538019154.6719] policy: ipv6-pd: none of 0 prefixes of enp2s0 can be shared on enp5s0 <info> [1538019154.6719] device (enp2s0): ipv6-pd: device doesn't use DHCPv6, can't request prefixes ... <debug> [1538019158.9088] ndisc[0x561734e850e0,"enp2s0"]: neighbor discovery configuration changed [dGR]: <debug> [1538019158.9088] ndisc[0x561734e850e0,"enp2s0"]: dhcp-level managed ... <info> [1538019158.9359] dhcp6 (enp2s0): dhclient started with pid 6501 ... It seems there is a bug. At the moment when enp5s0 required a prefix, it wasn't available. And later on, when enp2s0 did DHCPv6, it wrongly wasn't retried to share a prefix. What to do about that, and how to fix is, that is a good question... best, Thomas
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