Training courses

Kernel and Embedded Linux

Bootlin training courses

Embedded Linux, kernel,
Yocto Project, Buildroot, real-time,
graphics, boot time, debugging...

Bootlin logo

Elixir Cross Referencer

; config options
server:
	edns-client-string: 10.0.0.0/24 "abc d"
	edns-client-string: 10.0.0.10/32 "123AbC!"

stub-zone:
	name: "edns-string-abc."
	stub-addr: 10.0.0.1

stub-zone:
	name: "edns-string-123."
	stub-addr: 10.0.0.10

stub-zone:
	name: "notag."
	stub-addr: 10.10.0.1

CONFIG_END

SCENARIO_BEGIN Test EDNS string tag option

RANGE_BEGIN 0 1000
	ADDRESS 10.0.0.1
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
edns-string-abc. IN A
SECTION ANSWER
edns-string-abc. IN A 10.20.30.40
SECTION ADDITIONAL
ENTRY_END
RANGE_END

RANGE_BEGIN 0 1000
	ADDRESS 10.0.0.10
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
edns-string-123. IN A
SECTION ANSWER
edns-string-123. IN A 10.20.30.40
SECTION ADDITIONAL
ENTRY_END
RANGE_END

RANGE_BEGIN 0 1000
	ADDRESS 10.10.0.1
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
notag. IN A
SECTION ANSWER
notag. IN A 10.20.30.40
SECTION ADDITIONAL
ENTRY_END
RANGE_END

STEP 10 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
edns-string-abc. IN A
ENTRY_END

STEP 20 CHECK_OUT_QUERY
ENTRY_BEGIN
MATCH qname qtype opcode ednsdata
SECTION QUESTION
edns-string-abc. IN A
SECTION ADDITIONAL
	HEX_EDNSDATA_BEGIN
		fd e9           ; Opcode 65001
		00 05           ; Length 5
		61 62 63 20 64  ; "abc d"
	HEX_EDNSDATA_END
ENTRY_END

STEP 30 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
edns-string-abc. IN A
SECTION ANSWER
edns-string-abc. IN A 10.20.30.40
ENTRY_END

STEP 110 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
edns-string-123. IN A
ENTRY_END

STEP 120 CHECK_OUT_QUERY
ENTRY_BEGIN
MATCH qname qtype opcode ednsdata
SECTION QUESTION
edns-string-123. IN A
SECTION ADDITIONAL
	HEX_EDNSDATA_BEGIN
		fd e9           ; Opcode 65001
		00 07           ; Length 7
		31 32 33 41 62  ; "123Ab"
		43 21		; "C!"
	HEX_EDNSDATA_END
ENTRY_END

STEP 130 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
edns-string-123. IN A
SECTION ANSWER
edns-string-123. IN A 10.20.30.40
ENTRY_END

STEP 210 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
notag. IN A
ENTRY_END

STEP 220 CHECK_OUT_QUERY
ENTRY_BEGIN
MATCH qname qtype opcode ednsdata
SECTION QUESTION
notag. IN A
SECTION ADDITIONAL
	HEX_EDNSDATA_BEGIN
	HEX_EDNSDATA_END
ENTRY_END

STEP 230 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
notag. IN A
SECTION ANSWER
notag. IN A 10.20.30.40
ENTRY_END

SCENARIO_END