Home assistant promoting wrong hostname to router

Hi guys,

i just set up a new fritzbox and i now work with DHCP and IP-reservation instead of fix ip addresses.

I did this to not have to edit very hostname manually.

Every device is promoting their correct hostname, except home assistant. It’s shown as 027A9B01F2DF0000.

I could change it manually but i want to know what the problem is.

Under System → Network → Hostname i set it to “haos” but he does not promote this hostname…

Maybe anyone has a solution for this.

Thank you very much!