Title: Edgerouter-X-SFP and fiber at home
Date: 2020-08-04 15:15

I'm lucky enough to have an ISP providing me with gigabit fiber, as
well as with a [SFP]( https://en.wikipedia.org/wiki/Small_form-factor_pluggable_transceiver ) of my choice,
meaning that I don't have to use some terrible *[residential gateway]( https://en.wikipedia.org/wiki/Residential_gateway )*
like the one provided by [SFR/Misericable]( https://en.wikipedia.org/wiki/SFR ) when I was still in Paris,
which was beyond awful at every single level, just like their support, infrastructure, stores, … everything was terrible.

Nowadays, I'm using my [Edgerouter X SFP]( https://www.ui.com/edgemax/edgerouter-x-sfp/ ) directly as my main router,
and once minor issues were taken care of, it's nothing but __great__.

The first problem I encountered was that hardware offloading for NAT wasn't enabled, so instead of
having around 1Gbps, I maxed out at 100Mbps. This setting can be checked by running `show ubnt offload`,
and enabled with `set system offload hwnat enable` or `system → offload → type in "enable" at hwnat` in the web interface.
This yielded the expected 1Gbps!

There was an [update](https://www.ui.com/download/edgemax/edgerouter-x-sfp ) available (`v1.10.11` at the time), so I updated, rebooted,
and the upstream connection suddently dropped for exactly one minute at random
intervals. Instead of investigating and debugging like a grown up, I jumped the
hype wagon wagon and slapped the *new* firmware (`v2.0.8-hotfix1`) instead of
the LTS one, and it magically solved the problem. It seems that this is a know
issue: the Edgerouter LTS firmware leaks some weird stuff on the WAN interface,
triggering the port-security of the ISP, resulting in a one minute long
temporary drop.

Anyway, long story short, I'm now enjoying symmetric 1Gps, delivered by proper hardware, yay!