Re: [Twisted-Python] RFC: IPv6 multicast join/ticket 6597

2016-08-04 Thread Cory Benfield
> On 4 Aug 2016, at 04:59, Jason Litzinger wrote: > Testing multicast is ... challenging. I barely have any idea how to set up a test environment for IPv4, and no idea what to do for IPv6. If you can speak to this in your tests (and hopefully docs as well) that would be

Re: [Twisted-Python] RFC: IPv6 multicast join/ticket 6597

2016-08-04 Thread Jason Litzinger
> When you say *no* interfaces, do you mean actually no interfaces? As in, no > loopback as well? I do not, sorry, that was poorly worded. The loopback interface was up for all test runs, and all other interfaces on my machine (ethernet and wifi) were down. Down in this context has two meanings

Re: [Twisted-Python] RFC: IPv6 multicast join/ticket 6597

2016-08-04 Thread Cory Benfield
> On 4 Aug 2016, at 17:03, Jason Litzinger wrote: > >> When you say *no* interfaces, do you mean actually no interfaces? As in, no >> loopback as well? > > I do not, sorry, that was poorly worded. The loopback interface was > up for all test runs, and all other interfaces on my machine (ether

Re: [Twisted-Python] RFC: IPv6 multicast join/ticket 6597

2016-08-04 Thread Tristan Seligmann
On Thu, 4 Aug 2016 at 18:04 Jason Litzinger wrote: > I did try specifying the loopback index, however, I received a > "Network Unreachable" error. I didn't have time to dig into whether > it was possible to do what I wanted with the loopback interface last > night. > By default, the "multicast"

Re: [Twisted-Python] RFC: IPv6 multicast join/ticket 6597

2016-08-04 Thread Jason Litzinger
> By default, the "multicast" flag is not enabled for the loopback interface > on Linux. Does running "ip link set dev lo multicast on" help here? > (Although requiring this would then be rather problematic for testing, as > doing this in containerized environments and restricted environments like