## ip-tunnel ip-tunnel — IP Tunneling Settings |

## Properties

Table 66.

Key Name | Value Type | Default Value | Value Description
--- | --- | --- | ---
    encapsulation-limit
    uint32
    0
| How many additional levels of encapsulation are permitted to be prepended to packets. This property applies only to IPv6 tunnels.
    flow-label
    uint32
    0
| The flow label to assign to tunnel packets. This property applies only to IPv6 tunnels.
    input-key
    string
| The key used for tunnel input packets; the property is valid only for certain tunnel modes (GRE, IP6GRE). If empty, no key is used.
    local
    string
| The local endpoint of the tunnel; the value can be empty, otherwise it must contain an IPv4 or IPv6 address.
    mode
    uint32
    0
| The tunneling mode, for example NM_IP_TUNNEL_MODE_IPIP (1) or NM_IP_TUNNEL_MODE_GRE (2).
    mtu
    uint32
    0
| None
    name
    string
    ip-tunnel
| The setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
    output-key
    string
| The key used for tunnel output packets; the property is valid only for certain tunnel modes (GRE, IP6GRE). If empty, no key is used.
    parent
    string
| If given, specifies the parent interface name or parent connection UUID the new device will be bound to so that tunneled packets will only be routed via that interface.
    path-mtu-discovery
    boolean
    TRUE
| Whether to enable Path MTU Discovery on this tunnel.
    remote
    string
| The remote endpoint of the tunnel; the value must contain an IPv4 or IPv6 address.
    tos
    uint32
    0
| The type of service (IPv4) or traffic class (IPv6) field to be set on tunneled packets.
    ttl
    uint32
    0
| The TTL to assign to tunneled packets. 0 is a special value meaning that packets inherit the TTL value.