question about ip rule uidrange
From: Gianluca Stivan <hidden>
Date: 2020-02-22 12:23:21
Hello, I'm trying to setup routing based on uidrange, and I seem to keep hitting the same issue. My understanding is that if a certain user is running a process, the corresponding table is looked up when the uid is in the uidrange. $ whoami yawnt $ id uid=1000(yawnt) $ ip rule list 0: from all lookup local 32765: from all uidrange 1000-1000 lookup custom 32766: from all lookup main 32767: from all lookup default $ ip route list table custom default via 192.168.1.1 dev wlp4s0 proto dhcp metric 600 With this configuration, there is no internet connection. Traceroute just hangs. On a TCP level, I see SYN being sent, SYN/ACK being received, but then no ACK being sent from my computer. However, if I change 32675 to "from all lookup custom", then it works. $ sudo ip rule del uidrange 1000-1000 $ sudo ip rule add lookup custom $ ip rule list 0: from all lookup local 32765: from all lookup custom 32766: from all lookup main 32767: from all lookup default $ curl google.com <HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8"> ... I'm running ArchLinux with iproute2 version 5.5.0. I wonder if I'm doing something wrong or this is a bug? Thanks in advance! Best, Gianluca