Do you have these set to prevent arp flux? net.ipv4.conf.all.arp_ignore = 1 net.ipv4.conf.all.arp_announce = 2
Denny > On Sep 28, 2017, at 11:27, Loy, Matthias <matthias....@hbm.com> wrote: > > Hello, > > I'm using ptp4l on a device with 2 ethernet interfaces with ptp support. > We configure one interface to use for synchronzation with udpv4 as > transport protocol which works fine. > > Lately I found that if configuring both interfaces to be in the same > IPv4 subnet, synchronization stopped working even if forcing the > interface to use. > > I looked through the the code (udp.c) and found the function > mcast_bind() that should force the interface for sending. It uses the > socket option IP_MULTICAST_IF with a structure carrying the interface index. > > The same socket option may also be called with the ipv4 address of the > interface. I tried this variant and it works fine. > > Attached you can find a patch with my changes. > > kind regards, > Matthias > > > Hottinger Baldwin Messtechnik GmbH, Im Tiefen See 45, 64293 Darmstadt, > Germany | www.hbm.com > > Registered as GmbH (German limited liability corporation) in the commercial > register at the local court of Darmstadt, HRB 1147 > Company domiciled in Darmstadt | Managing Director: Andreas Huellhorst | > Chairman of the board: Eoghan O�Lionaird > > Als Gesellschaft mit beschraenkter Haftung eingetragen im Handelsregister des > Amtsgerichts Darmstadt unter HRB 1147 > Sitz der Gesellschaft: Darmstadt | Geschaeftsfuehrung: Andreas Huellhorst | > Aufsichtsratsvorsitzender: Eoghan O�Lionaird > > The information in this email is confidential. It is intended solely for the > addressee. If you are not the intended recipient, please let me know and > delete this email. > > Die in dieser E-Mail enthaltene Information ist vertraulich und lediglich > fuer den Empfaenger bestimmt. Sollten Sie nicht der eigentliche Empfaenger > sein, informieren Sie mich bitte kurz und loeschen diese E-Mail. > <0002-make-sure-to-send-udpv4-over-specific-interface.patch>------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! > http://sdm.link/slashdot_______________________________________________ > Linuxptp-users mailing list > Linuxptp-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linuxptp-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
