search for: option_ecn

...on the probe reply. If you succesfully receive a reply with ECN bits set, then you know ECN works. Since the remote side just echoes the contents of the probe, you could also put a copy of the ECN bits in the probe payload, and then you can detect if the ECN bits got zeroed. You can also define an OPTION_ECN in src/connection.h, so nodes can announce their support for ECN, but that should not be necessary I think. > B) I have long theorized that a lot of userspace vpns bottleneck on > the read and encapsulate step, and being strict FIFOs, > gradually accumulate delay until finally they run ou...

I have long included tinc in the cerowrt project as a lighter weight, meshy alternative to conventional vpns. I sat down a few days ago to think about how to make vpn connections work better through fq_codel, and decided I should maybe hack on a vpn to do the job. So I picked up tinc's source code for the first time, got it working on IPv6 as a switch in a matter of minutes between two

...N works. Well it should test for both CE and ECT(0) being set on separate packets. > Since the remote side just echoes the contents of the probe, you could > also put a copy of the ECN bits in the probe payload, and then you can > detect if the ECN bits got zeroed. You can also define an OPTION_ECN in > src/connection.h, so nodes can announce their support for ECN, but that > should not be necessary I think. Not sure. > >> B) I have long theorized that a lot of userspace vpns bottleneck on >> the read and encapsulate step, and being strict FIFOs, >> gradually accu...

...succesfully receive a reply with ECN bits set, then you know ECN works. >> Since the remote side just echoes the contents of the probe, you could >> also put a copy of the ECN bits in the probe payload, and then you can >> detect if the ECN bits got zeroed. You can also define an OPTION_ECN in >> src/connection.h, so nodes can announce their support for ECN, but that >> should not be necessary I think. >> >>> B) I have long theorized that a lot of userspace vpns bottleneck on >>> the read and encapsulate step, and being strict FIFOs, >>> gr...