Hi! I want to convert isc-dhcp-server config below to Kea. ``` option space test_opt code width 2 length width 2 hash size 17; option test_opt.script-url code 36 = text;
subnet 10.138.127.128 netmask 255.255.255.128 { option routers 10.138.127.129; option subnet-mask 255.255.255.128; range dynamic-bootp 10.138.127.220 10.138.127.254; vendor-option-space test_opt; option test_opt.script-url = "http://10.138.124.42/ztp_arcos.py"; } ``` I set up Kea like below.(extract) ``` "Dhcp4": { "option-def": [ { "name": "test_opt_script-url", "code": 36, "space": "vendor-encapsulated-options-space", "type": "string" } ], "subnet4": [ { "subnet": "10.138.127.128/25", "pools": [ { "pool": "10.138.127.220 - 10.138.127.254" } ], "option-data": [ { "name": "routers", "data": "10.138.127.129" }, { "name": "test_opt_script-url", "space": "vendor-encapsulated-options-space", "data": "http://10.138.124.42/ztp_arcos.py" }, { "name": "vendor-encapsulated-options" } ] } ] ``` Kea's DHCP reply is below. It include option 43 field. ``` 14:39:03.677003 IP (tos 0x0, ttl 64, id 16054, offset 0, flags [DF], proto UDP (17), length 409) dhcpserver.bootps > 10.138.127.131.bootps: [bad udp cksum 0x1258 -> 0x5de2!] BOOTP/DHCP, Reply, length 381, hops 1, xid 0xd991b36f, Flags [none] (0x0000) Your-IP 10.138.127.249 Gateway-IP 10.138.127.131 Client-Ethernet-Address b4:a9:fc:d7:7f:44 (oui Unknown) Vendor-rfc1048 Extensions Magic Cookie 0x63825363 DHCP-Message Option 53, length 1: Offer Subnet-Mask Option 1, length 4: 255.255.255.128 Default-Gateway Option 3, length 4: 10.138.127.129 Domain-Name-Server Option 6, length 8: 10.138.124.36,10.138.124.37 Hostname Option 12, length 9: "localhost" Domain-Name Option 15, length 14: "local" Vendor-Option Option 43, length 35: 36.33.104.116.116.112.58.47.47.49.48.46.49.51.56.46.49.50.52.46.52.50.47.122.116.112.95.97.114.99.111.115.46.112.121 Lease-Time Option 51, length 4: 3600 Server-ID Option 54, length 4: dhcpserver RN Option 58, length 4: 900 RB Option 59, length 4: 1800 Client-ID Option 61, length 7: ether b4:a9:fc:d7:7f:44 T119 Option 119, length 16: 57370161,41185796,1768516201,40529920 END Option 255, length 0 ``` It looks `36(code).33(Length).(data)` but DHCP client expects `00.36(code).00.33(length).(data)` ``` Vendor-Option Option 43, length 35: 36.33.104.116.116.112.58.47.47.49.48.46.49.51.56.46.49.50.52.46.52.50.47.122.116.112.95.97.114.99.111.115.46.112.121 ``` How to reply `00.36(code).00.33(length).(data)` format? Regards. -- kakkotetsu (kakkote...@gmail.com)
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