Re: [Wien] strange RSTs over IPv4

2018-04-23 Diskussionsfäden Adi Kriegisch
Hi! > > > today, since i woke up "internet was not working" at stein712 [...] > I have exactly the same problem... :-) [...] > Maybe someone could have a look at the issue? I am online again; thanks to whoever fixed that! -- Adi signature.asc Description: Digital signature -- Wien mailing list

Re: [Wien] strange RSTs over IPv4

2018-04-23 Diskussionsfäden Ralf Schlatterbeck
On Mon, Apr 23, 2018 at 11:29:43AM +0200, Albert Rafetseder wrote: > > The packet traces indeed look like a machine on the path between the > server and you injects an RST, "Great Firewall" style. If I remember > correctly, machines used to send an RST by default when seeing a packet > their stack

Re: [Wien] strange RSTs over IPv4

2018-04-23 Diskussionsfäden Albert Rafetseder
Hi Gui, The packet traces indeed look like a machine on the path between the server and you injects an RST, "Great Firewall" style. If I remember correctly, machines used to send an RST by default when seeing a packet their stack doesn't expect --- like from a connection they didn't initiate, etc.

Re: [Wien] strange RSTs over IPv4

2018-04-23 Diskussionsfäden Gui Iribarren
On 23/04/18 11:03, Gui Iribarren wrote: > yay!! so my report was not useless, happy about that :) (for a moment i was > afraid it was something unique to me, and my email was just noise to the list) > > i'm more than happy to aid debugging. yesterday i tried to "bisect" the > traceroute hops to

Re: [Wien] strange RSTs over IPv4

2018-04-23 Diskussionsfäden Gui Iribarren
yay!! so my report was not useless, happy about that :) (for a moment i was afraid it was something unique to me, and my email was just noise to the list) i'm more than happy to aid debugging. yesterday i tried to "bisect" the traceroute hops to see how far i could get without RSTs, but did not

Re: [Wien] strange RSTs over IPv4

2018-04-23 Diskussionsfäden Adi Kriegisch
Hi! > > today, since i woke up "internet was not working" at stein712 > > i just time to take a closer look, and something funny is going on. > > global ipv6 works as expected. > > ipv4 icmps also work fine, RTT to various known places is legit > > but any tcpv4 fails misteriously with a RST I hav

Re: [Wien] strange RSTs over IPv4

2018-04-22 Diskussionsfäden Gui Iribarren
On 22/04/18 20:53, Gui Iribarren wrote: > today, since i woke up "internet was not working" at stein712 > i just time to take a closer look, and something funny is going on. > global ipv6 works as expected. > ipv4 icmps also work fine, RTT to various known places is legit > but any tcpv4 fails mist

[Wien] strange RSTs over IPv4

2018-04-22 Diskussionsfäden Gui Iribarren
today, since i woke up "internet was not working" at stein712 i just time to take a closer look, and something funny is going on. global ipv6 works as expected. ipv4 icmps also work fine, RTT to various known places is legit but any tcpv4 fails misteriously with a RST a tcpdump on both ends (laptop