In previous releases, netstat -ci would display stats for network interfaces continuously. In 6.1, it shows stats once, then crashes. [root@squid-1 logs]# netstat -ci Kernel Interface table Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg eth0 1500 0 1158442 0 0 0 1192714 0 0 0 BRU lo 3924 0 8856 0 0 0 8856 0 0 0 LRU Kernel Interface table Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg SIOCGIFCONF: Inappropriate ioctl for device missing interface information: Inappropriate ioctl for device [root@squid-1 logs]# I've checked this on multiple 6.1, 5.2, 5.2 (with 2.2 kernel upgrades), and 6.0 systems. All (and only) the 6.1 systems exhibit this problem.
Fixed in net-tools-1.54-2.