Hi!
After banging my head over a problem (I can't seem to be able to
successfully establish an IPv6 tunnel over IPv6 with gre(4)), I consulted
chatgpt.com (I know, I know...). On there, the AI model states that
gre(4) only supports tunneling over IPv4. After reading the man page, I
came across the following paragraph:
"The gre pseudo-device provides interfaces for tunnelling protocols
across IPv4 and IPv6 networks using the Generic Routing Encapsulation
(GRE) encapsulation protocol."
I read this as IPv6 over IPv6 *is* possible; but at the same time, there
is only a sysctl switch "net.inet.gre.allow", whereas other sysctl
switches, enabling different IPv6 routing capabilities, use
"net.inet6[...]". So?
Thank you for your time and clarifying the issue...
--
Mit besten Wünschen /
With best wishes,
Manuel Kuklinski
