Re: [GLLUG] radvd leaking memory

2020-02-04 Thread James Courtier-Dutton via GLLUG
On Tue, 4 Feb 2020 at 17:29, Tim Woodall via GLLUG
 wrote:
>
> Hi,
>
> Last night radvd got killed by the oom killer
> Feb  4 02:32:11 firewall17 vmunix: [1762825.239631] [  pid  ]   uid  tgid 
> total_vm  rss pgtables_bytes swapents oom_score_adj name
> Feb  4 02:32:11 firewall17 vmunix: [1762825.239671] [   3882]   105  3882
> 6849019387   58163248648 0 radvd
>
> When I look on another host I see that it's rather larger than I would
> have expected:
> 3247 radvd 20   0  177228  41016556 S   0.0  24.0  16:07.26 radvd
>
> After a bounce it looks better:
>   1030 radvd 20   02444   1616   1476 S   0.0   0.9   0:00.01 radvd
>
>
> I cannot find anything about radvd having memory leaks. Does anyone know
> if this large memory footprint is expected (I'm running it on a VM with
> not much memory and I can increase that if necessary)?
>
> I can obviously restart it to avoid this issue. I wonder if it could be
> related to VPN interfaces that are constantly being created and removed.
>

Well its open source, so in theory you could diagnose the leak yourself.
clang has a very useful "-fsanitize=address"  option.
It allows the program to run pretty much at full speed, and then
reports memory leaks.

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[GLLUG] radvd leaking memory

2020-02-04 Thread Tim Woodall via GLLUG

Hi,

Last night radvd got killed by the oom killer
Feb  4 02:32:11 firewall17 vmunix: [1762825.239631] [  pid  ]   uid  tgid 
total_vm  rss pgtables_bytes swapents oom_score_adj name
Feb  4 02:32:11 firewall17 vmunix: [1762825.239671] [   3882]   105  3882
6849019387   58163248648 0 radvd

When I look on another host I see that it's rather larger than I would
have expected:
3247 radvd 20   0  177228  41016556 S   0.0  24.0  16:07.26 radvd

After a bounce it looks better:
 1030 radvd 20   02444   1616   1476 S   0.0   0.9   0:00.01 radvd


I cannot find anything about radvd having memory leaks. Does anyone know
if this large memory footprint is expected (I'm running it on a VM with
not much memory and I can increase that if necessary)?

I can obviously restart it to avoid this issue. I wonder if it could be
related to VPN interfaces that are constantly being created and removed.

Tim.



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Re: [GLLUG] moving a fixed ip number

2020-02-04 Thread James Roberts via GLLUG

I do believe that DNS was invented to solve this problem, inter alia :)

MeJ

On 04/02/2020 12:54, John Winters via GLLUG wrote:

On 04/02/2020 11:09, Oliver Howe wrote:
It is a leased line into my office. I want to move to a new provider 
(the current one is more of a reseller) and keep the same IP address 
as a lot of my clients allow me access to their systems based on my IP 
address.


If you move to a new provider, then almost certainly not - unless you 
move to the provider for whom your current one is a reseller.


Your IP address will be one of a range belonging to and routed to your 
underlying supplier.  You can't port them like mobile phone numbers.


Cheers,
John



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Re: [GLLUG] moving a fixed ip number

2020-02-04 Thread John Winters via GLLUG

On 04/02/2020 11:09, Oliver Howe wrote:
It is a leased line into my office. I want to move to a new provider 
(the current one is more of a reseller) and keep the same IP address as 
a lot of my clients allow me access to their systems based on my IP address.


If you move to a new provider, then almost certainly not - unless you 
move to the provider for whom your current one is a reseller.


Your IP address will be one of a range belonging to and routed to your 
underlying supplier.  You can't port them like mobile phone numbers.


Cheers,
John

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Re: [GLLUG] moving a fixed ip number

2020-02-04 Thread Martin A. Brooks via GLLUG

On 2020-02-04 11:09, Oliver Howe via GLLUG wrote:

It is a leased line into my office. I want to move to a new provider
(the current one is more of a reseller) and keep the same IP address
as a lot of my clients allow me access to their systems based on my IP
address.
According to whois the owner is mdnx so I will try them and see if
they can help.


If you don't own the IP range (i.e. it's _at least_ a /24 PI allocated 
to you by RIPE), it's very very unlikely your current ISP will let you 
take it with you.




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Re: [GLLUG] moving a fixed ip number

2020-02-04 Thread John Winters via GLLUG

On 04/02/2020 09:51, Oliver Howe via GLLUG wrote:

Is it possible to keep my fixed ip number when i move house?


Assuming you mean your IP address, that would depend on who your ISP is 
and whether it is genuinely fixed (rather than just having happened to 
stay the same for a long time).


With a genuinely fixed address, and assuming you keep the same ISP, I 
would expect it to be possible, but you really need to ask them.  If you 
change ISP, then definitely not.


Cheers,
John

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Re: [GLLUG] moving a fixed ip number

2020-02-04 Thread Iain M Conochie via GLLUG
On Tue, 2020-02-04 at 09:51 +, Oliver Howe via GLLUG wrote:
> Hi,
> 

Hi Oliver!

> Is it possible to keep my fixed ip number when i move house?

Short answer: It should be.

Long answer:

 It will really depend on your ISP. If you are keeping the same ISP,
then this should not be an issue. However, I would recommend you
contact them before moving to ensure continuity of service (including
your static IP!)

Cheers!

Iain
> 
> cheers,
> 
> Oliver
> 
> 

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[GLLUG] moving a fixed ip number

2020-02-04 Thread Oliver Howe via GLLUG
Hi,

Is it possible to keep my fixed ip number when i move house?

cheers,

Oliver
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