Test run at: 2021-12-10 16:59:08 GMT
Client Prefix (v6): 2603:3001:19xx::/40
Client AS (v6): 7922 (COMCAST-7922)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server) Source address type IPv6 Private - ULA unknown Routable unknown Largest spoofable neighbor prefix length none
Spoof status key received Spoofed packet was received. ✔ Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it. rewritten Spoofed packet was received, but the source address was changed en route. blocked Spoofed packet was not received, but unspoofed packet was. unknown Neither spoofed nor unspoofed packet was received.
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon) Prefix
ASN of spoofed
Received 2603:3001:19xx::/40 /120 7922 no 2603:3001:19xx::/40 /112 7922 no 2603:3001:19xx::/40 /104 7922 sendto 2603:3001:19xx::/40 /96 7922 sendto 2603:3001:19xx::/40 /88 7922 sendto 2603:3001:19xx::/40 /80 7922 sendto 2603:3001:19xx::/40 /72 7922 sendto 2603:3001:19xx::/40 /64 7922 sendto 2603:3001:19xx::/40 /56 7922 sendto 2603:3001:19xx::/40 /48 7922 sendto 2603:3001:19xx::/40 /40 7922 sendto 2603:3001:99xx::/40 /32 7922 sendto 2603:3081:19xx::/40 /24 7922 sendto 2603:b001:19xx::/40 /16 11796 sendto
Meaning of status in Received column:
no Packets spoofed from adjacent netblock were not received, probably due to blocking sendto The spoofer client was unable to send spoofed headers due to an operating system restriction.
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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