Hi,
Our requirement was to redirect the telnet packets to host OS from VPP so
that the kernel stack can reply to the telnet packet. And found that tuntap
interface in VPP is perfect for this.
I was able create tuntap interface using:
vpp# tap connect newtap
tapcli-0
vpp# show in
inacl interface
vpp# show interface
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
local0 0 down 0/0/0/0
memif0/0 1 up 9000/0/0/0 rx
packets 161
rx
bytes 9096
tx
packets 499
tx
bytes 31437
drops
945
tx-error 785
tapcli-0 2 down 9000/0/0/0 drops
8
which created the following in host:
newtap: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::cc6c:feff:feed:ff11 prefixlen 64 scopeid 0x20<link>
ether ce:6c:fe:ed:ff:11 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7 bytes 586 (586.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Can anyone please help me with the following questions:
1. How will we assign an IP to this host interface (newtap). Is there a way
to do this from VPP (set int ip addr tapcli-0 192.168.3.1/24 --> assigns
IP only to VPP interface.)
2. How will host OS reply to the packets? Routing entries are known only to
VPP. is there a way to export these to host OS networking stack from VPP?
Thanks
Vyshakh
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