# veth > Virtual Ethernet interfaces that connect containers to RouterOS. One end of a veth is this RouterOS interface; the other end is the network interface of the container that uses it, with the veth's name and... ----------- ## interface/veth **Conditions:** !smips **Syscap:** container **Type:** Directory Virtual Ethernet interfaces that connect containers to RouterOS. One end of a veth is this RouterOS interface; the other end is the network interface of the container that uses it, with the veth's name and `container-mac-address`. The address, gateway and DHCP settings are applied inside the container. A veth runs only while a container that uses it runs. See [VETH](../../containers/veth). Disabled: the veth is not used. Running: a container that uses the veth is running. Without it, the MAC addresses show as `00:00:00:00:00:00` and a router address on the veth is invalid. Name of the veth. Inside the container, the interface has the same name. MAC address of the router's end of the veth. A DHCP server sees this address for a veth with `dhcp=yes`, so a static lease for the container uses it. Set automatically when the container starts if empty. MAC address of the container's end of the veth, the address of the interface inside the container. Set automatically when the container starts if empty. IPv4 and IPv6 addresses of the container's interface, several separated by commas, for example `172.17.0.2/24,2001:db8:17::2/64`. The router needs its own address in the same subnet on the veth (or on the bridge the veth is a port of) to reach the container. IPv4 default gateway inside the container, usually the router's address on the veth. IPv6 default gateway inside the container. With `yes`, RouterOS runs a DHCP client for the container on the veth and applies the lease inside the container (address and default route). The DHCP server sees the veth's `mac-address` and the host name `-`. The container's DNS server comes from the container settings, not from DHCP. Default: no. The address the DHCP client leased for the container, when `dhcp=yes`.