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snerstack / sner-monorepo

sner -- slow network recon
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ipv6 discovery NXDOMAIN vs NODATA #115

Open bodik opened 1 week ago

bodik commented 1 week ago

reconsider ipv6 discovery

https://github.com/bodik/sner4/issues/45

pharook commented 1 week ago

Probably needs some more testing, but looks its NXDOMAIN vs NOERROR:

$ dig soa 0.0.0.0.0.0.0.0.0.6.0.0.0.1.0.0.0.8.1.7.0.1.0.0.2.ip6.arpa
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57204
;; AUTHORITY SECTION:
1.0.0.0.8.1.7.0.1.0.0.2.ip6.arpa. 891 IN SOA    nsa.cesnet.cz. hostmaster.cesnet.cz. 2019120893 28800 7200 1814400 900

$ dig soa 2.0.0.0.0.0.0.0.0.0.6.0.0.0.1.0.0.0.8.1.7.0.1.0.0.2.ip6.arpa
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 17175
;; AUTHORITY SECTION:
1.0.0.0.8.1.7.0.1.0.0.2.ip6.arpa. 873 IN SOA    nsa.cesnet.cz. hostmaster.cesnet.cz. 2019120893 28800 7200 1814400 900