I think tunneling devices were last touched by ANK.
But I have found a problem with the tunnel semantics I have proposed
in my previous mail
[ once again, I have proposed the tunnel setup to be changed from
ifconfig tunl0 ipaddr up netmask 255.255.255.255
route add otherend dev tunl0
route add -net othernet gw otherend
route del otherend
to
ifconfig tunl0 ipaddr up pointopoint otherend [ netmask 255.255.255.255 ]
route add -net othernet gw otherend
which looks more sane.
]
The problem is that when you do "ifconfig tunl0 ipaddr p-t-p otherend",
the recent Linux kernels also installs the route to "otherend" via tunl0,
which is certainly not the right thing - you want the other end of the
tunnel to be reachable via normal interfaces/routes (to which you can send
the encapsulated packets).
The other potential problem can be the non-P-T-P tunnels
(can GRE be a virtual WAN instead of the virtual point-to-point link?
IPIP certainly cannot, but is the same true for GRE over IP?).
-Yenya
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