Thanks to Robert McKay for the answer that fixed it. His explanation was
> Did you forget to add ttl 255 (or similar) to the tunnel setup? By default > the gre packets will end up with the ttl set to the same as the inside > payload ttl so when you traceroute they won't reach the other gateway.. that > sounds like what you might be talking about? > > http://lartc.org/howto/lartc.tunnel.gre.html > <http://lartc.org/howto/lartc.tunnel.gre.html> Added TTL=255 to the ifcfg-tun* config files and all is well. Thanks to the others for their ideas (too many to name). Great community EKG > On Oct 19, 2016, at 8:27 AM, Eric Germann <ekgerm...@semperen.com> wrote: > > Colleagues, > > I know we’re all usually running big gear, but I’ve been tasked with building > some appliances to run in the cloud as VM’s. > > Looking for someone who has built on Centos 7 using IPSec and GRE tunnels. > Having an issue with GRE tunnels and trace route. That’s pulling my hair out. > > If you’d like to discuss, reply off list. > > Thanks > > EKG >
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