Amazingly it is coming up to almost a year since the original post, and still nothing has changed.
Just to provide my data, amongst others (although it is the same as most others, so is unlikely to add anything new).
Unlike most others, I am on the Huawei H122-373 (as an aside, Three tried to push me onto the Zyxel router, I declined as I don't particularly appreciated being pushed a downgrade), so this is not router specific.
These issues have plagued me for probably a year now. They did not occur when I first signed up with Three. I finally had enough and did a search, only to find this mammoth thread. I waded through about 13 of the 42 pages before realising that there was unlikely to be a solution here. Ironically, I cannot load this thread without activating my VPN (just times out otherwise)
I often get issues connecting to sites with Firefox with PR_END_OF_FILE_ERROR. There seems to be no consistency as to which sites this will happen to and when, and I often have to refresh several times to get the page to load.
Github is pretty much unusable (I am a software developer so that is... fun). The most common error is:
error: RPC failed; curl 18 transfer closed with outstanding read data remaining
error: 62601 bytes of body are still expected
fetch-pack: unexpected disconnect while reading sideband packet
fatal: early EOF
fatal: fetch-pack: invalid index-pack output
Downloads will often fail (be it through firefox, or using curl/wget). They need to be 'retried' to complete.
The short snippet posted earlier in this thread outputs exactly as the original user posted:
for i in {1..100}; do curl -I --no-progress-meter -o /dev/null https://github.com || true; done;
curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to github.com:443
Using a VPN solves this issue. That is neither a practical, nor long-term solution.
This is clearly a major issue within Three's infrastructure affecting a lot of users. I find it staggering that a year on, we are no closer to a solution.
I am happy to provide more information directly if it will help expedite a fix. I am not optimistic.
