How does setting IPv6-Suffix (hex) works?

[jow]

1. Suffix only works for clients doing stateful DHCPv6, it has no effect on systems not doing DHCP but SLAAC only, e.g. Android
2. The hostid suffix value is limited to 32bit, so the maximum possible value is ffffffff

@openwrtforever

tried be51:07fa:f822:38d7 but suffix only gets be51

That's because scanning the number stops at the first non-digit, so only be51 gets used in this case.

@openwrtforever

then I tried be5107faf82238d7 and that still does not work

That value is too large to fit into a 32bit integer. be5107fa or f82238d7 would work.