Hello,
I am trying to connect to remote VPN server using PPTP protocol through VPP.
All of the packets except LCP are transmitted well. LCP packets are
intercepted by gre4-input, which drops them with "unsupported version"
reason:
01:28:52:011029: ip4-local
GRE: 192.168.9.97 -> 192.168.12.90
tos 0x00, ttl 64, length 61, checksum 0xe605
fragment id 0xbd80, flags DONT_FRAGMENT
GRE 0x880b
01:28:52:011029: gre4-input
GRE: tunnel -1 len 61 src 192.168.9.97 dst 192.168.12.90
01:28:52:011029: error-drop
gre4-input: unsupported version
In this case PPTP server IP address: 192.168.9.97.
PPTP client IP address: 192.168.12.90, it runs on loopback interface using
tap-inject command.
Can I use the "classify" commands to redirect all traffic on this interface
to tap-inject-neighbor node bypassing the gre4-input node? Or maybe I can
configure the gre4-input for ignoring the transit GRE tunnels?
Thank you in advance,
Aleksander
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