These days, some cloud hosting environments still didn’t offer dhcp6 services (for example Hetzner Cloud) – therefore it’s impossible to use an automated ipv6 configuration with iPXE.

But a static configuration can still be used:

File: config.ipxe#

echo static ipv6 ipxe configuration

# ip
set net0/ip6:ipv6 fe80::10
set net0/len6:int8 64
set net0/gateway6:ipv6 fe80::1

# dns - hetzner
set net0/dns6:ipv6 2a01:4f8:0:1::add:1010