IP-FOU(8) Linux IP-FOU(8)
NAME
ip-fou - Foo-over-UDP receive port configuration
ip-gue - Generic UDP Encapsulation receive port configuration
SYNOPSIS
ip [ OPTIONS ] fou { COMMAND | help }
ip fou add port PORT { gue | ipproto PROTO } [ local IFADDR ] [ peer
IFADDR ] [ peer_port PORT ] [ dev IFNAME ]
ip fou del port PORT [ local IFADDR ] [ peer IFADDR ] [ peer_port
PORT ] [ dev IFNAME ]
ip fou show
DESCRIPTION
The ip fou commands are used to create and delete receive ports for
Foo-over-UDP (FOU) as well as Generic UDP Encapsulation (GUE).
Foo-over-UDP allows encapsulating packets of an IP protocol directly
over UDP. The receiver infers the protocol of a packet received on a
FOU UDP port to be the protocol configured for the port.
Generic UDP Encapsulation (GUE) encapsulates packets of an IP protocol
within UDP and an encapsulation header. The encapsulation header con-
tains the IP protocol number for the encapsulated packet.
When creating a FOU or GUE receive port, the port number is specified
in PORT argument. If FOU is used, the IP protocol number associated
with the port is specified in PROTO argument. You can bind a port to a
local address/interface, by specifying the address in the local IFADDR
argument or the device in the IFNAME argument. If you would like to
connect the port, you can specify the peer address in the peer IFADDR
argument and peer port in the peer_port PORT argument.
A FOU or GUE receive port is deleted by specifying PORT in the delete
command, as well as local address/interface or peer address/port (if
set).
EXAMPLES
Configure a FOU receive port for GRE bound to 7777
# ip fou add port 7777 ipproto 47
Configure a FOU receive port for IPIP bound to 8888
# ip fou add port 8888 ipproto 4
Configure a GUE receive port bound to 9999
# ip fou add port 9999 gue
Delete the GUE receive port bound to 9999
# ip fou del port 9999
Configure a FOU receive port for GRE bound to 1.2.3.4:7777
# ip fou add port 7777 ipproto 47 local 1.2.3.4
SEE ALSO
ip(8)
AUTHOR
Tom Herbert <therbert@google.com>
iproute2 2 Nov 2014 IP-FOU(8)