[Story] When IPv6 Fixes IPv4 Peering Issues

Mon Jun 13 17:58:08 UTC 2022

Who knows...  Hard to know if I'm taking a different network path or 
just going through the same routers but bypassing whatever is blocking 
the packets.

I should probably clarify that I'm not having slowdowns Cys -> Den.  I'm 
having complete and total loss of packets for that one stream/type of 
traffic.

I went so far as to even randomize source/dest ports on each end in case 
it was some sort of misguided filtering (ie:  port 12345 -> 54321 
instead of 12345 -> 12345).

I have working tunnels on CL/Lumen's own network from Cys to multiple 
endpoints in Boi, so I know its not something on our side in Cys.

On 6/13/22 11:49 AM, Christopher Morrow wrote:
> Curious to know if the 'saved the day' was really 'fell into a different 
> rate-limit bucket' for UDP by address family :)
> 
> On Mon, Jun 13, 2022 at 10:53 AM Jared Mauch <jared at puck.nether.net 
> <mailto:jared at puck.nether.net>> wrote:
> 
> 
> 
>      > On Jun 13, 2022, at 10:25 AM, Brielle <bruns at 2mbit.com
>     <mailto:bruns at 2mbit.com>> wrote:
>      >
>      > I quickly reconfigured the Cys WireGuard node to connect to the
>     Den node over IPv6 and, after WireGuard did its magic dynamically
>     reconfiguring endpoints, suddenly the connection was back up and
>     routing at full speed. Hell yeah!
>      >
>      > So, moral / TLDR of the story?
>      >
>      > Don't discount taking the time to set up IPv6, even if it's just
>     for your important devices. Also, WireGuard > IPsec.
> 
>     This is great to hear.  I know that many things will operate better
>     in IPv6 land vs IPv4 land as in IPv4 land there’s a lot of
>     port-based filtering that happens in networks which isn’t the same
>     in IPv6-land.
> 
>     Super glad to hear that IPv6 saved the day for you!
> 
>     - Jared
> 

-- 
Brielle Bruns
The Summit Open Source Development Group
http://www.sosdg.org    /     http://www.ahbl.org