You should use interfaces with same MTU size. In same situaion I made OpenVPN tunel over ppp conntction with MTU 1500 (same as in ethernet network) On Sat, 18 Dec 2004 00:10:22 +0100 armin langhofer <office@xxxxxxxxxxxx> wrote: > hi there > > i found your project and tried to bridge two ppp devices. > > > you say (http://bridge.sourceforge.net/faq.html) that this is possible: > > ... "Linux bridging is very flexible; the LAN's can be either > traditional Ethernet device's, or pseudo-devices such as PPP, VPN's or > VLAN's. The only restrictions are that the devices:" ... > > > i tried this but got "br_add_interface: Invalid argument" when adding a > ppp device to the bridge. adding an ethernet device works perfectly! > > 00:07:21 protector ~ # brctl addbr br0 > 00:07:22 protector ~ # brctl addif br0 eth2 > 00:07:30 protector ~ # brctl addif br0 ppp0 > br_add_interface: Invalid argument > > > > the ppp's are done with pppd and pptpd (poptop) > 00:09:39 protector ~ # pppd --version > pppd version 2.4.2 > 00:09:44 protector ~ # pptpd --version > PoPToP v1.1.4-b4 > > > any ideas? > > best regards, armin. > -- > armin langhofer > snail: fischer von erlachstr. 29 > snail: a-5020 salzburg > phone: +43 699 11648495 > email: office@xxxxxxxxxxxx > gnupg: http://langhofer.at/pubkey.txt > _______________________________________________ > Bridge mailing list > Bridge@xxxxxxxxxxxxxx > http://lists.osdl.org/mailman/listinfo/bridge -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 256 bytes Desc: OpenPGP digital signature Url : http://lists.osdl.org/pipermail/bridge/attachments/20050119/e16f73a8/signature.bin