Building fast interpreters in Rust
March 04, 2019 4:00PM
Continue reading »
Fixing an old hack - why we are bumping the IPv6 MTU
September 10, 2018 10:21AM
Back in 2015 we deployed ECMP routing - Equal Cost Multi Path - within our datacenters. This technology allowed us to spread traffic heading to a single IP address across multiple physical servers....
Enable Private DNS with 220.127.116.11 on Android 9 Pie
August 16, 2018 4:01PM
Android 9 Pie includes a slew of new features around digital well-being and privacy. Here's how to use the new Private DNS feature with 18.104.22.168....
IPv6 in China
July 19, 2018 1:03AM
At the end of 2017, Xinhua reported that there will be 200 Million IPv6 users inside Mainland China by the end of this year.. Halfway into the year, we’re seeing a rapid growth in IPv6 users and traffic originating from Mainland China....
eBPF, Sockets, Hop Distance and manually writing eBPF assembly
March 29, 2018 11:43AM
A friend gave me an interesting task: extract IP TTL values from TCP connections established by a userspace program. This seemingly simple task quickly exploded into an epic Linux system programming hack....
December 21, 2017 2:01PM
2018 and the Internet: our predictions
At the end of 2016, I wrote a blog post with seven predictions for 2017. Let’s start by reviewing how I did. I’ll score myself with two points for being correct, one point for mostly right and zero for wrong. That’ll give me a maximum possible score of fourteen. Here goes......