I'm setting up a PPP link between two Linuxes. Let them be called as server (who receives a call) and client (who calls out). After the connection has been established, the machines have got the following interfaces: Server (2.4.22): lo 127.0.0.1 /8 eth0 192.168.1.1 /24 ppp1 192.168.1.253 /32 Client (2.4.20): lo 127.0.0.1 /8 lo:1 192.168.1.4 /24 ppp0 192.168.1.254 /32 And in this configuration no one ping from the server has a reply. As well as any other kind of connection from the server waits forever for the reply. (There are no firewall at the any side.) And the problem seems to be with lo:1. If I remove it, or if I change its address to 192.168.2.x, all becomes ok. So, what does it mean? Is it just my mistake or something like a kernel (?) bug? Thanks in advance. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html