Session Report

Summary:

Test run at: 2017-04-30 00:49:07 GMT
Client Prefix (v6): 2601:640:c1xx::/40
Client AS (v6): 7922 (COMCAST-7922)
IPv6 Probes: 86

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.

Warnings:

• ⚠️ Your host was unable to source even non-spoofed IPv6 UDP traffic to our servers. A firewall, router or other middlebox is preventing our testing. To test your provider's network further, you must remove the firewall or router and connect directly.

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2601:640:c1xx::/40	/120	7922	sendto
2601:640:c1xx::/40	/112	7922	sendto
2601:640:c1xx::/40	/104	7922	sendto
2601:640:c1xx::/40	/96	7922	sendto
2601:640:c1xx::/40	/88	7922	sendto
2601:640:c1xx::/40	/80	7922	sendto
2601:640:c1xx::/40	/72	7922	sendto
2601:640:c1xx::/40	/64	7922	sendto
2601:640:c1xx::/40	/56	7922	sendto
2601:640:c1xx::/40	/48	7922	sendto
2601:640:c1xx::/40	/40	7922	sendto
2601:640:41xx::/40	/32	7922	sendto
2601:6c0:c1xx::/40	/24	7922	sendto
2601:8640:c1xx::/40	/16	UNROUTED	sendto

Meaning of status in Received column:

sendto

The spoofer client was unable to send spoofed headers due to an operating system restriction.

Summary:

The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.

Feedback:

We welcome questions and feedback to the Spoofer Information Mailing List and invite users to join the Spoofer Users Mailing List for discussion and announcements.