"""Test suite to test forwarders Invoke with `python3 -m pytest forwarder_check.py --forwarder [IP of forwarder]`""" # pylint: disable=C0301,C0111,C0103 # flake8: noqa import ipaddress import dns.message # NOTE silence incorrectly reported error, may be removed once it passes in CI import pytest # pylint: disable=wrong-import-order import answer_checker ALL = {"opcode", "qtype", "qname", "flags", "rcode", "answer", "authority", "additional"} HEADER = {"opcode", "qtype", "qname", "flags", "rcode"} VERSION_QUERY = dns.message.make_query("_version.test.knot-resolver.cz", "TXT") VERSION_ANSWER = dns.message.from_text("""; opcode QUERY rcode NOERROR flags QR RA RD ;QUESTION _version.test.knot-resolver.cz. IN TXT ;ANSWER _version.test.knot-resolver.cz. 3600 IN TXT "1" ;AUTHORITY ;ADDITIONAL """) def test_zone_version(forwarder): return answer_checker.send_and_check(VERSION_QUERY, VERSION_ANSWER, forwarder, ALL - {"additional", "authority"}) SIMPLE_QUERY = answer_checker.make_random_case_query("good-a.test.knot-resolver.cz", "A") SIMPLE_ANSWER = dns.message.from_text("""; opcode QUERY rcode NOERROR flags QR RD RA ;QUESTION good-a.test.knot-resolver.cz. IN A ;ANSWER good-a.test.knot-resolver.cz. 3600 IN A 217.31.192.130 ;AUTHORITY ;ADDITIONAL""") def test_supports_simple_answers(forwarder, tcp): return answer_checker.send_and_check(SIMPLE_QUERY, SIMPLE_ANSWER, forwarder, ALL - {"additional", "authority"}, tcp=tcp) EDNS_QUERY = answer_checker.make_random_case_query("good-a.test.knot-resolver.cz", "A", use_edns=0) def test_supports_EDNS0(forwarder, tcp): answer = answer_checker.get_answer(EDNS_QUERY, forwarder, tcp=tcp) if answer.edns != 0: raise ValueError("EDNS0 not supported") DO_QUERY = answer_checker.make_random_case_query("good-a.test.knot-resolver.cz", "A", want_dnssec=True) def test_supports_DO(forwarder, tcp): answer = answer_checker.get_answer(DO_QUERY, forwarder, tcp=tcp) if not answer.flags & dns.flags.DO: raise ValueError("DO bit sent, but not recieved") CD_QUERY = answer_checker.make_random_case_query("good-a.test.knot-resolver.cz", "A", want_dnssec=True) CD_QUERY.flags += dns.flags.CD def test_supports_CD(forwarder, tcp): answer = answer_checker.get_answer(CD_QUERY, forwarder, tcp=tcp) if not answer.flags & dns.flags.CD: raise ValueError("CD bit sent, but not recieved") RRSIG_QUERY = answer_checker.make_random_case_query("good-a.test.knot-resolver.cz", "A", want_dnssec=True) RRSIG_ANSWER = dns.message.from_text("""; opcode QUERY rcode NOERROR flags QR RD RA AD edns 0 eflags DO payload 4096 ;QUESTION good-a.test.knot-resolver.cz. IN A ;ANSWER good-a.test.knot-resolver.cz. 3600 IN A 217.31.192.130 good-a.test.knot-resolver.cz. 3600 IN RRSIG A 13 4 3600 20370119135450 20190205122450 58 test.knot-resolver.cz. n7BfrYwvRztj8khwefZxnVUSBm6vvIWH 3HGTfswPSUKqNrg6yqMIxm0dpLVPSIna hPnTnP3CP6G4SEfvAGk33w== ;AUTHORITY ;ADDITIONAL""") def test_returns_RRSIG(forwarder, tcp): return answer_checker.send_and_check(RRSIG_QUERY, RRSIG_ANSWER, forwarder, HEADER | {"answerrrsigs"}, tcp=tcp) DNSKEY_QUERY = answer_checker.make_random_case_query("test.knot-resolver.cz", "DNSKEY", want_dnssec=True) DNSKEY_ANSWER = dns.message.from_text("""; opcode QUERY rcode NOERROR flags QR RD RA AD edns 0 eflags DO payload 4096 ;QUESTION test.knot-resolver.cz. IN DNSKEY ;ANSWER test.knot-resolver.cz. 3600 IN DNSKEY 256 3 13 b5ZQUzN5iD9ercgxPeeEh9qI8UzazMa6 vo8GCART4iQNzAcsB6xPYVopHKcjyssH MUiDoQgrjVd6hOLWQqnCtg== test.knot-resolver.cz. 3600 IN DNSKEY 257 3 13 xrbuMAmJy3GlxUF46tJgP64cmExKWQBg iRGeLhfub9x3DV69D+2m1zom+CyqHsYY VDIjYOueGzj/8XFucg1bDw== test.knot-resolver.cz. 3600 IN RRSIG DNSKEY 13 3 3600 20370119141532 20190205124532 60526 test.knot-resolver.cz. TCJGKcojvwe5cQYJaj+vMS5/lW2xLDVi cABjowFhQ3ttTIfjNINBK1sAJgybmdtd 5GcBlgXOPz+QWRFJUnRU2g== ;AUTHORITY ;ADDITIONAL""") def test_supports_DNSKEY(forwarder, tcp): return answer_checker.send_and_check(DNSKEY_QUERY, DNSKEY_ANSWER, forwarder, ALL - {"additional", "authority"}, tcp=tcp) DS_QUERY = answer_checker.make_random_case_query("test.knot-resolver.cz", "DS", want_dnssec=True) DS_ANSWER = dns.message.from_text("""; opcode QUERY rcode NOERROR flags QR RD RA AD edns 0 eflags DO payload 4096 ;QUESTION test.knot-resolver.cz. IN DS ;ANSWER test.knot-resolver.cz. 1800 IN DS 0 8 2 0000000000000baff1ed10ca1beefc0111ded1cedeadadd011c0feecaca0b011 test.knot-resolver.cz. 1800 IN DS 60526 13 2 9E526A3D1D1D3F78BD11ABDCE8DE5A6CF9212CD2575D28FC10EBC046 F001AEA8 test.knot-resolver.cz. 1800 IN RRSIG DS 13 3 1800 20190227092958 20190213075958 23292 knot-resolver.cz. 9yBl60FpEgGt5R5JAKWWK1n1AGLSoeQDsX3nfLz/gQtljhKgnKgkM10T MZKIPUUY9jczh89ChoqCYFr+4MzURw== ;AUTHORITY ;ADDITIONAL""") # DS signature with tag 0 is left dangling in the zone to trigger a bug in building of # chain of trust in older versions of Unbound def test_supports_DS(forwarder, tcp): return answer_checker.send_and_check(DS_QUERY, DS_ANSWER, forwarder, HEADER | {"answerrrsigs"}, tcp=tcp) NSEC_NEGATIVE_QUERY = answer_checker.make_random_case_query("nonexistent.nsec.test.knot-resolver.cz", "A", want_dnssec=True) NSEC_NEGATIVE_ANSWER = dns.message.from_text("""; opcode QUERY rcode NXDOMAIN flags QR RD RA AD edns 0 eflags DO payload 4096 ;QUESTION nonexistent.nsec.test.knot-resolver.cz. IN A ;ANSWER ;AUTHORITY nsec.test.knot-resolver.cz. 3600 IN SOA knot-s-01.nic.cz. hostmaster.nic.cz. 2018042476 10800 3600 1209600 7200 nsec.test.knot-resolver.cz. 7200 IN NSEC unsigned.nsec.test.knot-resolver.cz. A NS SOA RRSIG NSEC DNSKEY CDS CDNSKEY nsec.test.knot-resolver.cz. 3600 IN RRSIG SOA 13 4 3600 20370126162631 20190212145631 25023 nsec.test.knot-resolver.cz. Nwpe3F7+fiCeGgyP+0WgyGYC5N8MY4Pc bipFKsHBxgkwkdEyV395VvYCbhz5YuJb SyXsv9tXOVN+XSb5Sac8uQ== nsec.test.knot-resolver.cz. 7200 IN RRSIG NSEC 13 4 7200 20370126162631 20190212145631 25023 nsec.test.knot-resolver.cz. ugmndbqwWjM5Zc/ZCEt/FeGSuw70sasu jylUhFljwdalhRNNlLNcQY9Tlr8A8Vnc YJCwI36LrwAp9m/W2ysZxQ== ;ADDITIONAL""") def test_negative_nsec_answers(forwarder, tcp): return answer_checker.send_and_check(NSEC_NEGATIVE_QUERY, NSEC_NEGATIVE_ANSWER, forwarder, HEADER | {"authority"}, tcp=tcp) NSEC3_NEGATIVE_QUERY = answer_checker.make_random_case_query("nonexistent.nsec3.test.knot-resolver.cz", "A", want_dnssec=True) NSEC3_NEGATIVE_ANSWER = dns.message.from_text("""; opcode QUERY rcode NXDOMAIN flags QR RD RA AD edns 0 eflags DO payload 4096 ;QUESTION nonexistent.nsec3.test.knot-resolver.cz. IN A ;ANSWER ;AUTHORITY nsec3.test.knot-resolver.cz. 3600 IN SOA knot-s-01.nic.cz. hostmaster.nic.cz. 2018042476 10800 3600 1209600 7200 mn71vn3kbnse5hkqqs7kc062nf9jna3u.nsec3.test.knot-resolver.cz. 7200 IN NSEC3 1 0 10 9b987e46196cd181 6j18444t948b3ij9dlakm317q132ccii A NS SOA RRSIG DNSKEY NSEC3PARAM CDS CDNSKEY af4kdouqgq3k3j0boq2bqlf4hi14c8qa.nsec3.test.knot-resolver.cz. 7200 IN NSEC3 1 0 10 9b987e46196cd181 druje9e1goigmosgk4m6iv7gbktg143a CNAME RRSIG nsec3.test.knot-resolver.cz. 3600 IN RRSIG SOA 13 4 3600 20370126162631 20190212145631 52462 nsec3.test.knot-resolver.cz. 9Ne2jUhyILPa5r0lAUdqkHtbkggSiRbt yqRaH3ENGlYcIIA3Rib6U2js+wEQpYVs SdQPcuzwAkYGmsqroSnDIw== mn71vn3kbnse5hkqqs7kc062nf9jna3u.nsec3.test.knot-resolver.cz. 7200 IN RRSIG NSEC3 13 5 7200 20370126162631 20190212145631 52462 nsec3.test.knot-resolver.cz. r7DbpNp4KXvV2a4TDoV3whUPpI6mmjKA bk5TQZnA/z1AwFMtzJDQJ7b9RCv2C9Es CbwKEa+/bLNH4N2Ed8RVPQ== af4kdouqgq3k3j0boq2bqlf4hi14c8qa.nsec3.test.knot-resolver.cz. 7200 IN RRSIG NSEC3 13 5 7200 20370119135450 20190205122450 52462 nsec3.test.knot-resolver.cz. NXEa3JxBpufEqBDEUNQhH2kQpPQbXYDX /b1soMKA4CwSaRVgiMkw41vevUZ/XtPj SFl0D6ov88QEDLG2RzYy9g== ;ADDITIONAL""") def test_negative_nsec3_answers(forwarder, tcp): return answer_checker.send_and_check(NSEC3_NEGATIVE_QUERY, NSEC3_NEGATIVE_ANSWER, forwarder, HEADER | {"authority"}, tcp=tcp) UNKNOWN_TYPE_QUERY = answer_checker.make_random_case_query("weird-type.test.knot-resolver.cz", "TYPE20025", want_dnssec=True) UNKNOWN_TYPE_ANSWER = dns.message.from_text(r"""; opcode QUERY rcode NOERROR flags QR RD RA AD edns 0 eflags DO payload 512 ;QUESTION weird-type.test.knot-resolver.cz. IN TYPE20025 ;ANSWER weird-type.test.knot-resolver.cz. 3506 IN TYPE20025 \# 4 deadbeef weird-type.test.knot-resolver.cz. 3506 IN RRSIG TYPE20025 13 4 3600 20370119135450 20190205122450 58 test.knot-resolver.cz. eHON73HpRyhIalC4xHwu/zWcZWuyVC3T fpBaOQU1MabzitXBUy4dKoAMVXhcpj62 Pqiz2FxMMg6nXRQJupQDAA== ;AUTHORITY ;ADDITIONAL """) def test_unknown_rrtype(forwarder, tcp): return answer_checker.send_and_check(UNKNOWN_TYPE_QUERY, UNKNOWN_TYPE_ANSWER, forwarder, ALL - {"additional", "authority"}, tcp=tcp) NONEXISTENT_DS_DELEGATION_NSEC_QUERY = answer_checker.make_random_case_query("unsigned.nsec.test.knot-resolver.cz", "DS", want_dnssec=True) NONEXISTENT_DS_DELEGATION_NSEC_ANSWER = dns.message.from_text("""; opcode QUERY rcode NOERROR flags QR RD RA AD edns 0 eflags DO payload 4096 ;QUESTION unsigned.nsec.test.knot-resolver.cz. IN DS ;ANSWER ;AUTHORITY nsec.test.knot-resolver.cz. 3600 IN SOA knot-s-01.nic.cz. hostmaster.nic.cz. 2018042476 10800 3600 1209600 7200 unsigned.nsec.test.knot-resolver.cz. 7200 IN NSEC *.wild.nsec.test.knot-resolver.cz. NS RRSIG NSEC nsec.test.knot-resolver.cz. 3600 IN RRSIG SOA 13 4 3600 20370126162631 20190212145631 25023 nsec.test.knot-resolver.cz. Nwpe3F7+fiCeGgyP+0WgyGYC5N8MY4Pc bipFKsHBxgkwkdEyV395VvYCbhz5YuJb SyXsv9tXOVN+XSb5Sac8uQ== unsigned.nsec.test.knot-resolver.cz. 7200 IN RRSIG NSEC 13 5 7200 20370119135450 20190205122450 25023 nsec.test.knot-resolver.cz. SWIzKCXTRQMz1n7myOioFrfbTljjR4jG NVRV43NWKtXQ6ftIR68wSVZ+6xsATHeG GXYYJxqaoviY+mLrJdJa/g== ;ADDITIONAL""") def test_delegation_from_nsec_to_unsigned_zone(forwarder, tcp): return answer_checker.send_and_check(NONEXISTENT_DS_DELEGATION_NSEC_QUERY, NONEXISTENT_DS_DELEGATION_NSEC_ANSWER, forwarder, ALL, tcp=tcp) NONEXISTENT_DS_DELEGATION_NSEC3_QUERY = answer_checker.make_random_case_query("unsigned.nsec3.test.knot-resolver.cz", "DS", want_dnssec=True) NONEXISTENT_DS_DELEGATION_NSEC3_ANSWER = dns.message.from_text("""; opcode QUERY rcode NOERROR flags QR RD RA AD edns 0 eflags DO payload 4096 ;QUESTION unsigned.nsec3.test.knot-resolver.cz. IN DS ;ANSWER ;AUTHORITY nsec3.test.knot-resolver.cz. 3600 IN SOA knot-s-01.nic.cz. hostmaster.nic.cz. 2018042476 10800 3600 1209600 7200 gk65ucsupb4m139fn027ci6pl01fk5gs.nsec3.test.knot-resolver.cz. 7200 IN NSEC3 1 0 10 9b987e46196cd181 mn71vn3kbnse5hkqqs7kc062nf9jna3u NS nsec3.test.knot-resolver.cz. 3600 IN RRSIG SOA 13 4 3600 20370126162631 20190212145631 52462 nsec3.test.knot-resolver.cz. 9Ne2jUhyILPa5r0lAUdqkHtbkggSiRbt yqRaH3ENGlYcIIA3Rib6U2js+wEQpYVs SdQPcuzwAkYGmsqroSnDIw== gk65ucsupb4m139fn027ci6pl01fk5gs.nsec3.test.knot-resolver.cz. 7200 IN RRSIG NSEC3 13 5 7200 20370119135450 20190205122450 52462 nsec3.test.knot-resolver.cz. WjWrhgoRmw8+xMuzcGLqPx76xEvPTQjN OaJOEXzK7409Jc7tVHgpolbNxsDdI0u+ h6s5Du78yx4z0QOCq2VEzg== ;ADDITIONAL""") def test_delegation_from_nsec3_to_unsigned_zone(forwarder, tcp): return answer_checker.send_and_check(NONEXISTENT_DS_DELEGATION_NSEC3_QUERY, NONEXISTENT_DS_DELEGATION_NSEC3_ANSWER, forwarder, ALL, tcp=tcp) NONEXISTENT_DELEGATION_FROM_NSEC_QUERY = answer_checker.make_random_case_query("nonexistent.nsec.test.knot-resolver.cz", "DS", want_dnssec=True) NONEXISTENT_DELEGATION_FROM_NSEC_ANSWER = dns.message.from_text("""; opcode QUERY rcode NXDOMAIN flags QR RD RA AD edns 0 eflags DO payload 4096 ;QUESTION nonexistent.nsec.test.knot-resolver.cz. IN DS ;ANSWER ;AUTHORITY nsec.test.knot-resolver.cz. 3600 IN SOA knot-s-01.nic.cz. hostmaster.nic.cz. 2018042476 10800 3600 1209600 7200 nsec.test.knot-resolver.cz. 7200 IN NSEC unsigned.nsec.test.knot-resolver.cz. A NS SOA RRSIG NSEC DNSKEY CDS CDNSKEY nsec.test.knot-resolver.cz. 3600 IN RRSIG SOA 13 4 3600 20370126162631 20190212145631 25023 nsec.test.knot-resolver.cz. Nwpe3F7+fiCeGgyP+0WgyGYC5N8MY4Pc bipFKsHBxgkwkdEyV395VvYCbhz5YuJb SyXsv9tXOVN+XSb5Sac8uQ== nsec.test.knot-resolver.cz. 7200 IN RRSIG NSEC 13 4 7200 20370126162631 20190212145631 25023 nsec.test.knot-resolver.cz. ugmndbqwWjM5Zc/ZCEt/FeGSuw70sasu jylUhFljwdalhRNNlLNcQY9Tlr8A8Vnc YJCwI36LrwAp9m/W2ysZxQ== ;ADDITIONAL""") def test_nonexistent_delegation_from_nsec(forwarder, tcp): return answer_checker.send_and_check(NONEXISTENT_DELEGATION_FROM_NSEC_QUERY, NONEXISTENT_DELEGATION_FROM_NSEC_ANSWER, forwarder, ALL, tcp=tcp, unset_flags=[dns.flags.AA]) # Some resolvers treat generated proof of non-existence as authoritative data # and set AA flag in this kind of answer, we have to normalize this by unsetting # it. NONEXISTENT_DELEGATION_FROM_NSEC3_QUERY = answer_checker.make_random_case_query("nonexistent.nsec3.test.knot-resolver.cz", "DS", want_dnssec=True) NONEXISTENT_DELEGATION_FROM_NSEC3_ANSWER = dns.message.from_text("""; opcode QUERY rcode NXDOMAIN flags QR RD RA AD edns 0 eflags DO payload 4096 ;QUESTION nonexistent.nsec3.test.knot-resolver.cz. IN DS ;ANSWER ;AUTHORITY nsec3.test.knot-resolver.cz. 3600 IN SOA knot-s-01.nic.cz. hostmaster.nic.cz. 2018042476 10800 3600 1209600 7200 mn71vn3kbnse5hkqqs7kc062nf9jna3u.nsec3.test.knot-resolver.cz. 7200 IN NSEC3 1 0 10 9b987e46196cd181 6j18444t948b3ij9dlakm317q132ccii A NS SOA RRSIG DNSKEY NSEC3PARAM CDS CDNSKEY af4kdouqgq3k3j0boq2bqlf4hi14c8qa.nsec3.test.knot-resolver.cz. 7200 IN NSEC3 1 0 10 9b987e46196cd181 druje9e1goigmosgk4m6iv7gbktg143a CNAME RRSIG nsec3.test.knot-resolver.cz. 3600 IN RRSIG SOA 13 4 3600 20370126162631 20190212145631 52462 nsec3.test.knot-resolver.cz. 9Ne2jUhyILPa5r0lAUdqkHtbkggSiRbt yqRaH3ENGlYcIIA3Rib6U2js+wEQpYVs SdQPcuzwAkYGmsqroSnDIw== mn71vn3kbnse5hkqqs7kc062nf9jna3u.nsec3.test.knot-resolver.cz. 7200 IN RRSIG NSEC3 13 5 7200 20370126162631 20190212145631 52462 nsec3.test.knot-resolver.cz. r7DbpNp4KXvV2a4TDoV3whUPpI6mmjKA bk5TQZnA/z1AwFMtzJDQJ7b9RCv2C9Es CbwKEa+/bLNH4N2Ed8RVPQ== af4kdouqgq3k3j0boq2bqlf4hi14c8qa.nsec3.test.knot-resolver.cz. 7200 IN RRSIG NSEC3 13 5 7200 20370119135450 20190205122450 52462 nsec3.test.knot-resolver.cz. NXEa3JxBpufEqBDEUNQhH2kQpPQbXYDX /b1soMKA4CwSaRVgiMkw41vevUZ/XtPj SFl0D6ov88QEDLG2RzYy9g== ;ADDITIONAL""") def test_nonexistent_delegation_from_nsec3(forwarder, tcp): return answer_checker.send_and_check(NONEXISTENT_DELEGATION_FROM_NSEC3_QUERY, NONEXISTENT_DELEGATION_FROM_NSEC3_ANSWER, forwarder, ALL, tcp=tcp, unset_flags=[dns.flags.AA]) NONEXISTENT_TYPE_NSEC3_QUERY = answer_checker.make_random_case_query("nsec3.test.knot-resolver.cz", "TYPE65281", want_dnssec=True) NONEXISTENT_TYPE_NSEC3_ANSWER = dns.message.from_text("""; opcode QUERY rcode NOERROR flags QR RD RA AD edns 0 eflags DO payload 4096 ;QUESTION nsec3.test.knot-resolver.cz. IN TYPE65281 ;ANSWER ;AUTHORITY nsec3.test.knot-resolver.cz. 3600 IN SOA knot-s-01.nic.cz. hostmaster.nic.cz. 2018042476 10800 3600 1209600 7200 mn71vn3kbnse5hkqqs7kc062nf9jna3u.nsec3.test.knot-resolver.cz. 7200 IN NSEC3 1 0 10 9b987e46196cd181 6j18444t948b3ij9dlakm317q132ccii A NS SOA RRSIG DNSKEY NSEC3PARAM CDS CDNSKEY nsec3.test.knot-resolver.cz. 3600 IN RRSIG SOA 13 4 3600 20370126162631 20190212145631 52462 nsec3.test.knot-resolver.cz. 9Ne2jUhyILPa5r0lAUdqkHtbkggSiRbt yqRaH3ENGlYcIIA3Rib6U2js+wEQpYVs SdQPcuzwAkYGmsqroSnDIw== mn71vn3kbnse5hkqqs7kc062nf9jna3u.nsec3.test.knot-resolver.cz. 7200 IN RRSIG NSEC3 13 5 7200 20370126162631 20190212145631 52462 nsec3.test.knot-resolver.cz. r7DbpNp4KXvV2a4TDoV3whUPpI6mmjKA bk5TQZnA/z1AwFMtzJDQJ7b9RCv2C9Es CbwKEa+/bLNH4N2Ed8RVPQ== ;ADDITIONAL""") def test_nonexistent_type_nsec3(forwarder, tcp): return answer_checker.send_and_check(NONEXISTENT_TYPE_NSEC3_QUERY, NONEXISTENT_TYPE_NSEC3_ANSWER, forwarder, ALL, tcp=tcp) NONEXISTENT_TYPE_NSEC_QUERY = answer_checker.make_random_case_query("nsec.test.knot-resolver.cz", "TYPE65281", want_dnssec=True) NONEXISTENT_TYPE_NSEC_ANSWER = dns.message.from_text("""; opcode QUERY rcode NOERROR flags QR RD RA AD edns 0 eflags DO payload 4096 ;QUESTION nsec.test.knot-resolver.cz. IN TYPE65281 ;ANSWER ;AUTHORITY nsec.test.knot-resolver.cz. 3600 IN SOA knot-s-01.nic.cz. hostmaster.nic.cz. 2018042476 10800 3600 1209600 7200 nsec.test.knot-resolver.cz. 7200 IN NSEC unsigned.nsec.test.knot-resolver.cz. A NS SOA RRSIG NSEC DNSKEY CDS CDNSKEY nsec.test.knot-resolver.cz. 3600 IN RRSIG SOA 13 4 3600 20370126162631 20190212145631 25023 nsec.test.knot-resolver.cz. Nwpe3F7+fiCeGgyP+0WgyGYC5N8MY4Pc bipFKsHBxgkwkdEyV395VvYCbhz5YuJb SyXsv9tXOVN+XSb5Sac8uQ== nsec.test.knot-resolver.cz. 7200 IN RRSIG NSEC 13 4 7200 20370126162631 20190212145631 25023 nsec.test.knot-resolver.cz. ugmndbqwWjM5Zc/ZCEt/FeGSuw70sasu jylUhFljwdalhRNNlLNcQY9Tlr8A8Vnc YJCwI36LrwAp9m/W2ysZxQ== ;ADDITIONAL""") def test_nonexistent_type_nsec(forwarder, tcp): return answer_checker.send_and_check(NONEXISTENT_TYPE_NSEC_QUERY, NONEXISTENT_TYPE_NSEC_ANSWER, forwarder, ALL, tcp=tcp)