On Monday 23 January 2006 17:53, [EMAIL PROTECTED] wrote: > I just posted about this issue to comp.os.linux.networking, but > it occurs to me that this may be a UML issue,
Guess probably not. The only problem may be if you used the automatic uml_net setup and it does the wrong thing for your special case. > and not a general > networking issue. > > Essentially, I'm trying the following: > > 1) using a virtual bridge on the host to wire up all the guests > to the physical ethernet directly. > 2) I have two blocks of IP addresses, in different subnets. > 3) I have a guest happily configured to use a single IP address > from subnet X. > > Now, when I tried adding another IP address to the same guest > (from subnet Y), no traffic would pass to that interface. > > I tried both an alias inside the guest and using separate tuntap > devices; neither worked... :( Having multiple network interfaces inside a guest shouldn't be a problem... but... see below... > Any hints/tips as to what might be wrong, or how to debug this > further? I've tried pinging from the host to the new ip on the > guest, and the ICMP packets are nowhere to be found. (according > to tcpdump. tcpdump on the host or on the guest? You must first check at which point they get lost... doesn't see them routed up correctly? You should check on the kernel logs if uml_net gave a correct command to setup proxy ARP, and/or if you gave correct commands if you did the thing yourself... > ) I do see 802.1d config packets repeating over and > over, which makes me think something lower-layer is not hooked up > correctly. From what you describe I cannot exclude that you bridged together two different subnets, which is like having two different subnets connected to the same hub. It's unusual, while I cannot see specifically any reason for which it shouldn't work, at least for a bridge in the simplest sense... > Thanks in advance for any help you can give, > - majere -- Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894) http://www.user-mode-linux.org/~blaisorblade ___________________________________ Yahoo! Mail: gratis 1GB per i messaggi e allegati da 10MB http://mail.yahoo.it ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid3432&bid#0486&dat1642 _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
