[Pkg-samba-maint] Bug#873073: Bug#873073: Other ways to disable IPv6 ?

[Dark Penguin]

On 24/07/19 22:14, Mathieu Parent wrote:
> Le mer. 24 juil. 2019 à 00:27, Dark Penguin <darkpenguin at yandex.com> a écrit :
>>
>> On 24/07/19 00:15, Mathieu Parent wrote:
>>> Version: 2:4.9.5+dfsg-5
>>>
>>> I'm closing this bug with the version in buster.
>>>
>>> Le dim. 21 juil. 2019 à 21:45, Dark Penguin <darkpenguin at yandex.com> a écrit :
>>>>
>>>> I tried this just now. The result is, basically, nothing: my kernel does
>>>> not have IPv6 support anyway, so restricting IPv6 out on the systemd
>>>> level does not change anything. There are still error messages about
>>>> being unable to bind to IPv6 upon restarting smbd, however with this,
>>>> restarting it also takes a few seconds instead of happening almost
>>>> instantly.
>>>>
>>>> I guess the "proper" solution would be the same: if there are no IPv6
>>>> interfaces in the system, smbd should not try to bind to them. If it was
>>>> specifically instructed to bind to a certain interface and it is
>>>> unavailable, then output an error message "This interface is requested
>>>> but unavailable", instead of "open_socket_in(): socket() call failed:
>>>> Address family not supported by protocol". This error message is not
>>>> even decipherable without Google's help.
>>>
>>> The following binds to IPv4 only:
>>>
>>>   interfaces = lo 0.0.0.0
>>>   bind to interfaces only = yes
>>>
>>> Regards
>>
>>
>> Umm... I've actually tried that before.
> 
> Confirmed with:
>    interfaces = 127.0.0.0/8 0.0.0.0
>    bind interfaces only = yes
> 
> 
> $ sudo ss -lntp | grep smbd
> LISTEN    0         50               127.0.0.1:445
> 0.0.0.0:*        users:(("smbd",pid=9146,fd=32))
> LISTEN    0         50               127.0.0.1:139
> 0.0.0.0:*        users:(("smbd",pid=9146,fd=33))


We should probably reopen this then?..


-- 
darkpenguin