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Doesnt tcp have a checksum field? Would this mean they are doing mitm business with non-encrypted traffic?
I am thinking the same problem. TCP checksum includes data field. Is it means AT&T flip bits and re-calculate checksum?
edit: apparently osx doesnt drop these packets according to the twitter thread.
Even explaining the issue is hard. It's not an outage, my internet isn't out, it's intermittently wrong. The phone support agents aren't prepared for this, and I can't find any way to escalate or speak to a network engineer.
I feel like if I spoke to the right engineer, there'd be a ticket on this and they'd roll at truck to their facilities or the IPX within an hour. It's a major network issue to flip bits, it's costing them bandwidth with retransmits and could be breaking SLAs with their business customers.
On the phone the most they could do was roll a truck to me.
It’s certainly a relief to have an apparent explanation for the weirdness I’ve been experiencing! I thought it was my home router or WiFi or something, but then I experienced the same problems at my partner’s house, so I thought maybe it’s just a problem with some websites I frequent or some common internet infrastructure. But we both have AT&T internet, so this must be it! For me, the problem has mostly manifested a…
Take a tcpdump capture on both server/client side and compare the handshake/tcp headers/negotiated window size. Often you see the server sending one thing, but the client sees another
Earlier quoted context omitted.
Here in Germany we bury everything . I don't even want to imagine how long it takes to rebuild all of that when some drunkard crashes his car into one of these poles or a lightning strike hits.
you'd be surprised but it takes quite an impact to disrupt a telephone pole. most crashes leave the pole standing (see examples online), and even when it does topple the wires seem to hold, and the utility company comes in with a fresh pole. the lightning strike factor does suck if you live very very close to the strike and nothing is surge protected. That happened to my house once and fried my xbox and router.
Does seem like they have noticed enough to start escalating it though: https://twitter.com/sonic/status/1336013450909257730?s=21
Earlier quoted context omitted.
The parts of SV that haven't buried their power lines (not too pretty to begin with) have gotten significantly uglier since all of the new cable/fiber/DSL infrastructure has gone in. There are in many cases multiple of these things on loads of poles: https://www.dslreports.com/forum/r31593060-Equip-What-is-thi...
The parts of SV that have buried their power lines, probably haven't gotten a whole lot of new cable/fiber/DSL than whatever was there when they buried it. SV is the perfect place to not bury infrastructure. There's no weather to worry about, and mostly people aren't going to shoot down the fiber to try to claim scrap metals.