>выдержка из wiki xen
>Xen-HVM has device emulation based on the QEMU project to provide I/O
>virtualization to the VMs...
>если domU не hvm то соглашусь с vif интерфейсами если же hvm
>то там интерфейсы tap.
>Или я неправ ?? не приходилось сталкиваться с QEMU project поэтому не знаю как там обстоят дела. например у себя не наблюдаю явных tun и tap.
ip link list
1: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
2: peth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:1a:4d:08:a5:24 brd ff:ff:ff:ff:ff:ff
3: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
4: vif0.0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
5: veth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
6: vif0.1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
7: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
8: vif0.2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
9: veth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
10: vif0.3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
11: veth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
12: tunl0: <NOARP> mtu 1480 qdisc noop state DOWN
link/ipip 0.0.0.0 brd 0.0.0.0
13: gre0: <NOARP> mtu 1476 qdisc noop state DOWN
link/gre 0.0.0.0 brd 0.0.0.0
14: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether 00:1a:4d:08:a5:24 brd ff:ff:ff:ff:ff:ff
имхо эти tun и tap как и мои tunl gre bond относятся к основной сетевой подсистеме ядра, а не xen
типа
Networking support
-->Networking options
<> IP: tunneling
Device Drivers
-->Network device support
<> Universal TUN/TAP device driver suppor
