Stephen Hemminger wrote: > On Mon, 10 Mar 2008 11:05:53 -0700 > Philip Prindeville <philipp_subx@xxxxxxxxxxxxxxxxxxxxx> wrote: > > >> I'm using Linux 2.6.20 (yes, I'll be upgrading to 2.6.24 as soon as it's >> stable). >> >> I have 4 VIA rhine ethernet controllers on my Soekris net5501, plus an >> ADSL PCI card (a Sangoma S-518) that runs in AAL5-SNAP mode, so it looks >> like an Ethernet controller. >> >> I'm trying to bridge eth0 and w1ad (the ADSL interface) into "br0". And >> I'm trying to force the traffic on br0 to have the MAC address that my >> ISP insists I use (i.e. that of the crappy little Westell 6100 modem >> they sent me). >> >> The issue is the following. If I do: >> >> ifconfig w1ad down hw ether x:x:x:x:x:x up >> >> followed by either: >> >> brctl addbr br0 >> brctl addif br0 eth0 >> brctl addif br0 w1ad >> >> or: >> >> brctl addbr br0 >> brctl addif br0 w1ad >> brctl addif br0 eth0 >> >> the bridge ends up taking the MAC address of eth0 either way, which I >> don't get (how does it decide which to use?). >> >> I can clone the same MAC address to both eth0 and w1ad, but I don't know >> if that would cause me any problems or not (I haven't read the STP spec >> in about 15 years). >> >> > > Having the same mac address on both just is going to be problematic (impossible > to do STP), so don't if you don't have to. > But you can set address of bridge and eth0 to any address you want. So set these > to the ISP assigned address. You probably will have to do it after bridge > is created. > > brctl addbr br0 > brctl addif br0 w1ad br0 > ifconfig eth0 hw ether x:x:x:x:x:x up > ifconfig w1ad up > ifconfig br0 hw ether x:x:x:x:x:x up > > ifconfig br0 A.B.C.D netmask 255.255.255.0 > That seems to not work. I get: # ifconfig br0 hw ether "00:18:3A:55:15:35" ifconfig: SIOCSIFHWADDR: Cannot assign requested address # Any ideas why? I'm doing this before an IP address has even been assigned... -Philip _______________________________________________ Bridge mailing list Bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/bridge
