Type Code,Attribute,Reference
1,User-Name,[RFC2865]
6,Service-Type,[RFC2865]
26,Vendor-Specific,[RFC2865]
27,Session-Timeout,[RFC2865]
88,Framed-Pool,[RFC2869]
100,Framed-IPv6-Pool,[RFC3162]
245.4,DHCPv4-Options,[RFC9445]