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   systemd.netdev    ( 5 )

конфигурация виртуального сетевого устройства (Virtual Network Device configuration)
  Name  |  Synopsis  |  Description  |  Supported netdev kinds  |  Match section options  |  [netdev] section options  |  [bridge] section options  |  [vlan] section options  |  [macvlan] section options  |  [macvtap] section options  |  [ipvlan] section options  |  [ipvtap] section options  |  [vxlan] section options  |  [geneve] section options  |  [bareudp] section options  |    [l2tp] section options    |  [l2tpsession] section options  |  [macsec] section options  |  [macsecreceivechannel] section options  |  [macsectransmitassociation] section options  |  [macsecreceiveassociation] section options  |  [tunnel] section options  |  [foooverudp] section options  |  [peer] section options  |  [vxcan] section options  |  [tun] section options  |  [tap] section options  |  [wireguard] section options  |  [wireguardpeer] section options  |  [bond] section options  |  [xfrm] section options  |  [vrf] section options  |  [batmanadvanced] section options  |  Examples  |  See also  |  Note  |

[L2TP] SECTION OPTIONS

The [L2TP] section only applies for netdevs of kind "l2tp", and accepts the following keys:

TunnelId= Specifies the tunnel identifier. Takes an number in the range 1...4294967295. The value used must match the "PeerTunnelId=" value being used at the peer. This setting is compulsory.

PeerTunnelId= Specifies the peer tunnel id. Takes a number in the range 1...4294967295. The value used must match the "TunnelId=" value being used at the peer. This setting is compulsory.

Remote= Specifies the IP address of the remote peer. This setting is compulsory.

Local= Specifies the IP address of the local interface. Takes an IP address, or the special values "auto", "static", or "dynamic". When an address is set, then the local interface must have the address. If "auto", then one of the addresses on the local interface is used. Similarly, if "static" or "dynamic" is set, then one of the static or dynamic addresses on the local interface is used. Defaults to "auto".

EncapsulationType= Specifies the encapsulation type of the tunnel. Takes one of "udp" or "ip".

UDPSourcePort= Specifies the UDP source port to be used for the tunnel. When UDP encapsulation is selected it's mandatory. Ignored when IP encapsulation is selected.

UDPDestinationPort= Specifies destination port. When UDP encapsulation is selected it's mandatory. Ignored when IP encapsulation is selected.

UDPChecksum= Takes a boolean. When true, specifies that UDP checksum is calculated for transmitted packets over IPv4.

UDP6ZeroChecksumTx= Takes a boolean. When true, skip UDP checksum calculation for transmitted packets over IPv6.

UDP6ZeroChecksumRx= Takes a boolean. When true, allows incoming UDP packets over IPv6 with zero checksum field.