Практические аспекты использования DHCP relay+option82

default-lease-time 300;
max-lease-time 600;
authoritative;
ddns-update-style none;
ddns-updates off;
log-facility local7;
deny unknown-clients;
deny bootp;
local-address 172.17.255.99;
option ms-classless-static-routes code 249 = array of integer 8;


if exists agent.circuit-id {
 log ( info, concat( " Lease for ", binary-to-ascii (10, 8, ".", leased-address),
    " Switch port: ", binary-to-ascii (10, 8, ".", option agent.circuit-id),.
    " Switch MAC: ", binary-to-ascii(16, 8, ".", option agent.remote-id)));
}

subnet 172.17.255.0 netmask 255.255.255.0 {
 deny unknown-clients;
 option routers 172.17.255.253;
}
shared-network "global_net" {

 subnet 172.17.254.1 netmask 255.255.255.255 {} # Свитч 1
 subnet 172.17.254.14 netmask 255.255.255.255 {} # Свитч 2
 subnet 172.17.254.49 netmask 255.255.255.255 {} # и т.д.
#Классы пользователей
class "vishnya" {
 match if binary-to-ascii(10, 16, "",  substring(option agent.circuit-id, 4, 2)) = "22"
  and binary-to-ascii(10, 8, ".", packet(24, 4)) = "172.17.254.1"
  and binary-to-ascii(16,  8, ":", substring(hardware,1, 6)) = "0:15:58:71:8f:7c"
 ;
}
class "sogacheva" {
 match if binary-to-ascii(10, 16, "",  substring(option agent.circuit-id, 4, 2)) = "23"
  and binary-to-ascii(10, 8, ".", packet(24, 4)) = "172.17.254.1"
  and binary-to-ascii(16,  8, ":", substring(hardware,1, 6)) = "0:25:22:e2:71:8d"
 ;
}
class "ers0072" {
 match if binary-to-ascii(10, 16, "",  substring(option agent.circuit-id, 4, 2)) = "4"
  and binary-to-ascii(10, 8, ".", packet(24, 4)) = "172.17.254.14"
  and binary-to-ascii(16,  8, ":", substring(hardware,1, 6)) = "f8:d1:11:2:e8:b2"
 ;
}

#------------------Описания network для 172.17.1.0/24---------------------------
 subnet 172.17.1.0 netmask 255.255.255.0 {
  allow unknown-clients;
  option routers 172.17.1.254;
  option domain-name-servers 172.17.100.1, 172.17.100.2;
  option ms-classless-static-routes 12, 172,16, 172,17,1,254;
   pool{
    allow members of "vishnya";
    range 172.17.1.144;
   }
   pool{
    allow members of "sogacheva";
    range 172.17.1.158;
   }
   pool{
    allow members of "ers0072";
    range 172.17.1.48;
   }
 }
}