On Thu, 2007-01-25 at 09:31 +0000, Andy Green wrote: > Naoki wrote: > > > # ethtool eth0 > > Settings for eth0: > > Link detected: yes > > Try mii-tool eth0 instead,maybe it can do better (or worse :-) ). Ya. First thing I tried, something wrong here for sure : # mii-tool SIOCGMIIPHY on 'eth0' failed: Operation not supported eth1: no autonegotiation, 100baseTx-HD, link ok Although, booting to a non-xen kernel fixes it : # ethtool eth0 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised auto-negotiation: Yes Speed: 100Mb/s Duplex: Half Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: umbg Wake-on: g Current message level: 0x00000007 (7) Link detected: yes Linux 2.6.19-1.2895.fc6 is ok.