I want to add gre tunnel in netplan.
name: gre0, mode: gre, remote: 10.11.22.100, local: 10.11.22.99, dev: eth1 I don't know what key value to put interface eth1 into gre0.
network:
version: 2
renderer: networkd
ethernets:
eth0:
dhcp4: false
dhcp6: false
addresses: []
nameservers:
addresses:
- 8.8.8.8
- 8.8.8.9
eth1:
dhcp4: false
dhcp6: false
addresses: []
eth2:
dhcp4: false
dhcp6: false
mtu: 1500
addresses:
- 10.11.29.11/16
- fe80::20c:29ff:fe83:fd2d/64
routes:
-
to: 0.0.0.0/0
via: 10.11.0.1
metric: 1
tunnels:
gre0:
mode: gre
local: 10.11.22.99
remote: 10.11.22.100
addresses:
- 10.11.22.90/24
mtu: 1500
The result of netplan apply was also different from what I expected. I don't know why gretap0 and erspan0 are created.
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:0c:29:83:fd:37 brd ff:ff:ff:ff:ff:ff
inet6 fe80::20c:29ff:fe83:fd37/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:0c:29:83:fd:41 brd ff:ff:ff:ff:ff:ff
inet6 fe80::20c:29ff:fe83:fd41/64 scope link
valid_lft forever preferred_lft forever
4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 00:0c:29:83:fd:2d brd ff:ff:ff:ff:ff:ff
inet 10.11.29.11/16 brd 10.11.255.255 scope global eth2
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe83:fd2d/64 scope link
valid_lft forever preferred_lft forever
5: gre0@NONE: <NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
link/gre 0.0.0.0 brd 0.0.0.0
inet 10.11.22.90/24 brd 10.11.22.255 scope global gre0
valid_lft forever preferred_lft forever
6: gretap0@NONE: <BROADCAST,MULTICAST> mtu 1462 qdisc noop state DOWN group default qlen 1000
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
7: erspan0@NONE: <BROADCAST,MULTICAST> mtu 1450 qdisc noop state DOWN group default qlen 1000