Date: Sun, 15 Dec 2019 13:28:37 -0500 From: "John W. O'Brien" <john@saltant.com> To: "Andrey V. Elsukov" <bu7cher@yandex.ru>, FreeBSD Networking <freebsd-net@freebsd.org> Subject: Re: NAT64 return traffic vanishes after successful de-alias Message-ID: <9779c4aa-a5de-f398-f33c-c278de530fe8@saltant.com> In-Reply-To: <fcd662ef-4fe8-a441-a0fd-4e6943466da0@yandex.ru> References: <9f3ee846-1357-0b73-cc0f-e001ea74b15c@saltant.com> <52463470-973e-aa5f-73f5-dd9ba39edf79@yandex.ru> <15ce6744-91f1-e755-22c7-0c5355686d90@saltant.com> <fcd662ef-4fe8-a441-a0fd-4e6943466da0@yandex.ru>
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On 2019/12/15 12:54, Andrey V. Elsukov wrote:
> On 15.12.2019 19:15, John W. O'Brien wrote:
>> Yes, this is exactly the problem. Thank you very much!
>>
>> The reason it was working in the EC2 case is because the FreeBSD AMIs
>> set ipv6_activate_all_interfaces=3D"YES".
>>
>> It helps me quite a lot to learn the concept of "reschedules a packet
>> again on the same interface". That fills in a gap that I am sure will
>> come in handy when trying to reason about behavior in the future.
>>
>> Incidentally, where are those drops counted? I did start looking at
>> "netstat -i" and "netstat -s" for clues, and even now that I know what=
>> to look for, I'm not sure I know what I'm seeing. Is it "ip6: output
>> packets discarded due to no route"?
>=20
> I think you can see such drops in the `netstat -isp ip6` output for eac=
h
> specific interface in the `input datagram discarded` row.
>=20
Ah, yes, that looks right. If I had waded further through the dizzying
array of netstat modes, I might have noticed upon that. Thank you again
for your help.
--=20
John W. O'Brien
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