Re: question regarding Linux kernel handling of packets received that has src address of interface address

2018-10-05 Thread Mikael Abrahamsson
On Fri, 5 Oct 2018, Ido Schimmel wrote: Did you set 'accept_local' [1] ? I did not. Thanks for the pointer, looks like exactly what I was looking for! -- Mikael Abrahamssonemail: swm...@swm.pp.se

Re: question regarding Linux kernel handling of packets received that has src address of interface address

2018-10-05 Thread Ido Schimmel
On Fri, Oct 05, 2018 at 10:50:24AM +0200, Mikael Abrahamsson wrote: > So my question is where in the Linux kernel is this check performed that > disallows incoming packets that have src IP address the same as an interface > address? Can it be turned off? Is there a way to "hack around it", for > in

question regarding Linux kernel handling of packets received that has src address of interface address

2018-10-05 Thread Mikael Abrahamsson
Hi, in the context of this IETF draft: https://tools.ietf.org/html/draft-patterson-intarea-ipoe-health-05 we're looking into being able to do internet access health check, by sending a packet to ourself via the upstream ISP router, to check if everything is still alive. Deployment scenari