When you say " I tried setting rp_filter to 0 on ALL interfaces", I'm not sure what you mean. net.ipv4.conf.*.rp_filter includes individual interface sysctls as well as "default" and "all".
There is also an Ubuntu-specific detail here, at least with newer Ubuntu (e.g. 12.04) -- the distro does not set this in /etc/sysctl.conf, but in /etc/sysctl.d/10-network-security.conf. So if you set it in /etc/sysctl.conf, it may get overridden by the other setting. I would set "default" and "all" and reboot so that the other interfaces pick up "default". 'sysctl -p' will reload the sysctl values, but since the interfaces already exist they will not pick up "default" values -- you need to reboot or perhaps just restart networking. You can check whether it has taken effect by 'sysctl -a 2>/dev/null | grep -F .rp_filter'. You want all of the values returned to be 0. -Jeff Weston > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Anders Nilsson > Plymoth > Sent: Monday, April 28, 2014 12:21 PM > To: [email protected] > Subject: [emane-users] Multicast packets not received over radio interface > > Hi, > > > I am running the latest version of EMANE, from the repo, on an Ubuntu 11.10 > host. > > My problem is that I can not receive multicast packets over the radio > interface. Unicast works without issue. > > By default, there is a route setup by EMANE to 224.0.0.0/4 pointing to bmf0, > the bridge interface. I am using multicast address > 224.1.0.1, > and when using the default setup I am receiving packets over bmf0 interface, > which is not what I want; obviously I want to receive > the > packets over the emane0 radio interface. > > If I add a route to 224.1.0.0/24 to emane0, I can the see packets arrive on > emane0 using tcpdump, but they are never received by my > application. I found an older posting: > http://pf.itd.nrl.navy.mil/pipermail/emane-users/2012-May/000339.html > > where they say I should set rp_filter to 0 in order for applications to > receive multicast packets. I tried setting rp_filter to 0 on > ALL > interfaces, and that didn't help. I am still not receiving any packets. > > > Could someone help me find the issue? > > > Thanks, > Anders
smime.p7s
Description: S/MIME cryptographic signature
_______________________________________________ emane-users mailing list [email protected] http://pf.itd.nrl.navy.mil/mailman/listinfo/emane-users
