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Cake day: June 30th, 2023

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  • Ok. So a device didn’t get a dhcp address? No problem… It creates it’s open IP address and starts talking and try to get out on internet on its own…

    Its not that different from a conceptual point of view. Your router is still the gate keeper.

    Home router to ISP will usually use DHCPv6 to get a prefix. Sizes vary by ISP but its usually like a /64. This is done with Prefix Delegation.

    Client to Home Router will use either SLACC, DHCPv6, or both.

    SLACC uses ICMPv6 where the client asks for the prefix (Router Solicitation) and the router advertises the prefix (Router Advertisement) and the client picks an address in it. There is some duplication protection for clients picking the same IP, but its nothing you have to configure. Conceptually its not that different from DHCP Request/Offer. The clients cannot just get to the internet on their own.

    SLACC doesn’t support sending stuff like DNS servers. So DHCPv6 may still be used to get that information, but not an assigned IP.

    Just DHCPv6 can also be used, but SLACC has the feature of being stateless. No leases or anything.

    The only other nuance worth calling out is interfaces will pick a link local address so it can talk to the devices its directly connected to over layer 3 instead of just layer 2. This is no different than configuring 169.254.1.10/31 on one side and 169.254.1.11/31 on the other. These are not routed, its just for two connected devices to send packets to each other. This with Neighbor Discovery fills the role of ARP.

    There is a whole bunch more to IPv6, but for a typical home network these analogies pretty much cover what you’d use.


  • I don’t know about Nvidia specifically, but I mostly only see RSUs offered to Staff/Principal level engineers or Director and above on the management track. Many times with a multi year vestment period to act as a retention tool. You can make out good at the exiting end of the deal.

    IMHO its a shitty practice. There is risk if the C-level pulls some stupid shit tanking the stock. The reward could just as easily be distributed to employees with a profit sharing bonus that eliminates the risk of my options tanking while vesting. Let the employees convert to options if they want to stake on future company performance.

    At least in the US, I could have used the value of my options earlier in life to help with student loans, buying a house, medical issues, having kids, etc. I grew up poor. I “pulled myself up from bootstraps” and am doing well now. I still think the whole system is a dumb gimmick.








  • You pay for what you use. I have somewhere around 120-140GB and get a bill every 2 months. I think it has to be near a dollar you owe for them to invoice.

    Be mindful of the class A/B/C transactions at the bottom of the page with pricing. I paid about $0.60 when I first set everything up in Class C transactions. I haven’t gone over the free 2500 or whatever they give you since.

    I don’t use it quite like Dropbox with a watch daemon. I have an encrypted local back up I mount with rclone, do my work, then use rclone again to sync to b2 when I unmount it.

    I wouldn’t use to version control some project I’m working on where files change frequently. Those transactions would probably kill the cost savings at some point.


  • For android there is RoundSync. It automatically backs up folders of your choice on a schedule. Not on any app store. It must be installed by downloading the apk from GitHub.

    There is also Cryptomator as an alternative. I used it for years without issue, but prefer rclone for more control over my work stream. Think I paid a one time license of $10 for desktop and another $10 for mobile.

    Dropbox is only a good deal if you use near peak storage and/or do a lot of data transfers.

    I was paying $120/yr for 2TB. Now I’m on B2 Backblaze. On paper Dropbox was cheaper per GB, but with my usage pattern I’m paying like $1.00 every other month.