Hi @milosbulajic98 ,
In the .pkt you provided, the DHCPv6 pool only has the DNS server configured. It should look like this.
ipv6 dhcp pool DHCP-R1
address prefix 2001:3100:20:2::/64 lifetime 172800 86400
dns-server 2001:3100:20:1::2
!
With this configuration, both the PC and the SBC should be able to get an IPv6 address via DHCPv6.
Regards,
Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México