Viewing profile — mitchs

The most fun I've had with strace was debugging a 3-process deadlock. An snmp daemon was blocked waiting for a cli child process to finish, the cli was waiting for a response to a …

The doubling of J as a means of striding across the array also gives me some concern. While it is cache related, it is cache related for sneaky reasons. J is going to end up, in bi…

The important part is it safely allows you to pass references or other objects with lifetimes to those threads. (Or at least lets the compiler know so you can avoid having to write…

The big issue with v6 is you don't know what every ISP is doing with their IP space. The current RIPE recommendation is to delegate somewhere between a /48 to a /56 to every custom…

Neat. I had made something similar for work a while back, but as a LD_PRELOAD library that intercepted calls to malloc and friends. It would add extra space to every allocation so …

I don't like the idea of using caps lock frequently as a modifier. To me a frequently used modifier should either be on a thumb or on the opposite hand. I recently started trying t…

I've been a fan of saying that things need to be compliant with RFC 1925 section 2.1. (It Has To Work.)

> "all observable behaviors of your system will be depended on by somebody" Ugh, a former team I was on had that to the extreme. We were customizing open source software for intern…

It depends on the context. Not every bgp speaker needs the full internet table and frequent route changes. If you use the network to balance traffic across servers, you just need a…

Eh, I think of the menu of options, taking out Starlink in Europe with a DDOS has a high probability of providing value for Russia and is safer to execute compared with the theoret…

IMO the motivated state wouldn't go through the trouble to attack sites physically when they could just DDOS spacex's public IPs. It isn't like their IP address blocks are a secret…

I'm curious, what everyone considers far enough in the future for your code. Eg. are you willing to write code that puts nanoseconds in a 64 but number? That is "only" 584 years af…

Anyone with typescript code that references the non-optional field will get type errors if it is made optional. Though stuffing the string with the v6 subnet wouldn't be the worst …

I wonder how long it will take for CDK to support this stuff. I'm not sure how they will back themselves out of the corner of subnets having a required ipv4 CIDR property.

All of this weird behavior is generally inet_aton. https://linux.die.net/man/3/inet_aton

BGP is spoken between networks. There are a lesser known "IGP" protocols stitching together the insides of those networks. IS-IS and OSPF being the most notable. Though the nature …

Or just cast the pointer to uint##_t and use be##toh and htobe## from ? I think this is making a mountain out of a mole hill. I've spent tons of time doing wire (de)serialization i…

Refresh, as in transitioning from one image to another on the display. Partial refresh as in not running the waveform on pixels that don't change color, which dramatically reduces …

From what I've seen working on an e-reader, a big problem for any open source e ink product is the things EIH wants to keep secret about their displays. If you want to use the nice…

Heh, a popular consumer electronics product a room mate worked on shipped an update that used example.com as a connectivity test. Apparently they were on pace to rack up $20k/month…

I was initially troubled by the booting of Parler, but I've come around to seeing AWS's position as similar to the payment processors who don't want to deal with porn sites. Doing …

The real question who is using inet_aton(3). I'm betting none of the online converters.

They need to be capturing src/dest IPs as well as ports for AT&T to have any hope of using that data. Edit to make the comment more useful: If anyone is curious, look up "ECMP hash…

Unfortunately TCP checksums are hot garbage given switch ASIC design. They are a 16 bit one's complement sum over a packet. If you get two bit flips in the same offset % 16, you ca…