On 2020-07-21, David Gwynne wrote:
>
>
>> On 20 Jul 2020, at 05:30, Stuart Henderson wrote:
>>
>> On 2020-07-19, obs...@loopw.com wrote:
>>>
Is this normal?
>>>
>>> Checksum is OPTIONAL in UDP, not required. This is covered in RFC 768.
>>
>> For IPv4, anyway. It's required for v6.
>
> On 20 Jul 2020, at 05:30, Stuart Henderson wrote:
>
> On 2020-07-19, obs...@loopw.com wrote:
>>
>>> Is this normal?
>>
>> Checksum is OPTIONAL in UDP, not required. This is covered in RFC 768.
>
> For IPv4, anyway. It's required for v6.
Or is it?
https://tools.ietf.org/html/rfc6935
On 2020-07-19, obs...@loopw.com wrote:
>
>> Is this normal?
>
> Checksum is OPTIONAL in UDP, not required. This is covered in RFC 768.
For IPv4, anyway. It's required for v6.
> Is this normal?
Checksum is OPTIONAL in UDP, not required. This is covered in RFC 768.
Hi,
I noticed that UDP packets with a checksum of zero (0) make it through the
UDP stack to userland programs. Is there a knob to turn that off?
Offending packet:
08:38:28.035351 45.148.10.91.80 > 5.9.87.75.53: [no udp cksum] 65534+ [1au] ANY
(Class 10531)? .(24) (ttl 241, id 35118, len 52)
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