On Tue, Dec 15, 2015 at 11:00 AM, Henning Rogge <[email protected]> wrote: > On Tue, Dec 15, 2015 at 10:35 AM, Dave Taht <[email protected]> wrote: >> On Mon, Dec 14, 2015 at 8:44 PM, Juliusz Chroboczek >>>> Is there a reliable way of determining that an underlying interface is >>>> a bridge? >>> >>> https://github.com/jech/babeld/blob/master/kernel_netlink.c#L723 >>> >>> However, this only works for the Linux software bridge. It doesn't work >>> for the hardware switches built into your favourite router, and of course >>> it doesn't work for switches connected over Ethernet, which is what the >>> WLAN-SI people are using. >> >> I was basically wondering if there was something like an igmp message that >> asked >> if this "wire" was bridged to anything. >> >> The default outside of babel towers and the yurtlab is to bridge wifi >> to ethernet. > > Maybe something like this? > > https://en.wikipedia.org/wiki/Link_Layer_Discovery_Protocol > > Not sure how well it is supported by consumer grade switches.
Well, while I have seen those go by, along with stp, in fiddling with bridging and unbridging a test openwrt box (linksys ac1200) today I do not even see BPDUs with wireshark... https://en.wikipedia.org/wiki/Spanning_Tree_Protocol deep magic, long hidden. My thought was to put out a query over a protocol like this, and/or learn something about the bridging topology, passively, just as the switches do. > Henning Rogge _______________________________________________ Babel-users mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/babel-users
