Viewing profile — bewo001

An interface can have many ipv4 addresses as well. It's just not that common, so many people believe they'd need vlans to achieve that.

well.. openflow is pretty much dead, too inflexible, too slow. The whole control/user plane split is an attempt of the classical router vendors to keep their proprietary boxes. It …

Hm, some things compilers do during optimization would have been labelled AI during the last AI bubble.

It's much simpler. In the EU, truckers have to do mandatory 45 min breaks after 4 1/2 hours of driving. With the latest truck generation, this is enough time to recharge to get thr…

IQ tests are a bit absurd if one looks at the changing definitions of intelligence over the past century. Someone in the 1920s/30s would call the ability to solve equations or play…

I did once fly as a guest with a winch start, and yes it is something. The ascend is pretty steep and the acceleration is powerful. The pilot did not find good lift and we had to l…

My late father was a maintenance technician for those things. He hated it when programmers did smart instruction placement to optimize drum timing. When the drum speed was a little…

forth would come to mind, some people have build surprising stuff with it though I find it too low-level.

yes, IBM's CUA wasn't that bad. 'F1' for help is one remnant of this. ( https://en.wikipedia.org/wiki/IBM_Common_User_Access )

Actually, every browser supporting webrtc datachannel supports SCTP over UDP.

I don't understand the difference to TCP here. If the path is not congested but the receiving endpoint is, the receiver can control the bandwidth by reducing the window size. Ultim…

AFAIK, an ebpf function can only access memory it got handed as an argument or as result from a very limited number of kernel functions. Your function will not load if you don't ha…

"Schematics work really well for capturing information that's independent of time, .." This spells out what always irked me about graphical software.

The fun really starts if you have a CPU using big endian and a bus using little endian.. Back in the late 1990s, we moved from Motorola 68k / sbus to Power/PCI. To make the transit…

For high-speed networking, exokernel concepts are now being used in the form of DPDK (user space) and eBPF/XDP (user code dynamically verified and loaded into kernel space). Exoker…

done ( https://github.com/Netflix/bpftop/issues/17 ). Seems to be some futex issue, the kind of bugs that tend to be hard to replicate.

I might have mis-interpreted this statement: "Certain types and traits that exist in the standard library are known to the Rust compiler." ( https://doc.rust-lang.org/reference/spe…

I was thinking of things like Box, Rc, Arc, Cell, Refcell. Then there is also the macro language, which integrates Scheme concepts. Like C++, it is a huge language, with extra wrin…

Nice! But I got it to freeze under higher load. Removing the load does not help.

lifetimes, async, the myriads of pointer types, that poor-person's monad '?' for a single type.. Sure, you need to give the compiler a lot of hints to achieve what Rust is doing, b…

From my VoIP experience, there is no 'typical' in NAT. There have been attempts to classify NATs ( https://www.rfc-editor.org/rfc/rfc3489 , Section 5), but they have been abandoned…

By this they mean expulsion of all people -including citizens- who don't "look German" and people who support them. If this is not fascist, I don't know what is.

E1 (2Mbit/s) lines were used to connect data centers in the early 1990's.. Man, to think what you could at home with such bandwidth. Maybe even video!

Actually, it was envisioned that you'd use the D channel for packet switched data traffic (not IP, more like X.25). Why would a private person use more than 16 kbit/s for a home co…

I worked at an ISDN adapter company in the late 1990s. Apparently, one customer a couple of years earlier did use ISDN as their LAN technology. Each PC with an adaptor (to the joy …