On Tue, 2016-02-09 at 11:13 -0500, Robert J Brenneman wrote: > Multi homed linux seems to consider any MAC address as good as any other > when responding to an ARP. The default seems to assume you have every > ethernet port plugged to the same logical network. If you run tcpdump on > all interfaces for both machines, I bet you see the target of the telnet > request sometimes responding to the ARP out the wrong interface with the > wrong MAC address. > > Try this - on both your Linux x86 and Linux s390x systems, set this > variable in /etc/sysctl.conf > net.ipv4.conf.all.arp_announce = 1 > > and make it effective with 'sysctl -p /etc/sysctl.conf' > > see also: > http://kb.linuxvirtualserver.org/wiki/Using_arp_announce/arp_ignore_to_disable_ARP >
Bingo! Definitely where I was headed from the network side. Harold Grovesteen ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
